CN111059592A

CN111059592A - Range hood and method for operating a range hood

Info

Publication number: CN111059592A
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: 2020-04-24
Anticipated expiration: 2039-10-16
Also published as: EP3640546B1; EP3640546A1; DE102018217727A1; CN111059592B

Abstract

The invention relates to a range hood having a range hood housing (10) with a fan, a smoke screen (11) which is inclined upwards from a horizontal line 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 an operating unit (13) which is arranged on the smoke screen (11). The extraction hood is characterized in that the extraction hood (1) has a protective device (12) for temporarily covering the operating unit (13), the protective device (12) is movably fastened to the extraction hood (1), and the extraction 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

Range hood and method for operating a range hood

Technical Field

It is known to use a range hood to remove steam and fumes produced during cooking. The extractor hood is here mounted above the cooking hob. In order not to restrict the freedom of movement of the user, range hoods are used whose smoke shielding structure is inclined from the horizontal. Such a range hood is also known as a side draft range hood (Schraegessen). Furthermore, smoke extraction hoods are also known whose smoke barrier is inclined upwards from the horizontal so far that this smoke barrier is oriented substantially parallel to the walls of the room located behind the cooking hob. The smoke barrier is here in the vertical.

Background

In order to operate a range hood of this smoke barrier construction extending obliquely upwards from the horizontal or in the vertical, an operating unit must be provided on the side of the range hood facing the user, so that the user can easily reach this operating unit.

The disadvantage is that the operating unit is located in the incident flow region, in which the extraction hood flows against (anestrumen) steam and smoke. Dirt can thus be deposited on the operating unit, which can affect the functional function of the operating unit.

Disclosure of Invention

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

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

Thus, according to a first aspect, the invention relates to a range hood having a hood housing with a fan, a smoke screen structure which is inclined upwards from the horizontal and has a suction frame and a baffle arranged in front of the suction frame in the flow direction, and an operating unit which is arranged on the smoke screen structure. The extractor hood is characterized in that the extractor hood has a protective device for temporarily covering the operating unit, the protective device is movably fixed on the extractor hood, and the extractor hood has a movement unit for moving the protective device and an actuating unit for actuating the movement unit.

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

The hood also has an operating unit. The operating unit is arranged on the smoke barrier structure. The operating unit may have one or more operating elements and one or more displays. The operation unit may be, for example, a touch panel. 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 power can be adjusted or a program can be selected. Furthermore, it is preferred that additional functions of the extraction hood can also be controlled by the operating unit. For example, an operating unit can activate a lighting unit arranged on the extraction hood and adjust the light intensity. The operating unit may be fixed to the smoke barrier structure. At least a part of the smoke barrier, for example a part of the baffle, may form part of the operating unit. Components of the operating unit, such as sensors, can thus be arranged behind the flap and be actuated by the flap. However, it is also possible for the operating unit to be inserted into a recess of the flap 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 extractor hood is characterized in that the extractor 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 portion of the protective device forwardly conceals at least a portion of the operating unit is referred to as temporarily covering the operating unit. The side facing away from the cooking fume housing and in particular from the suction opening of the cooking fume housing is referred to as the front side of the operating unit. In the concealed state, the user is therefore not visible and cannot access the operating unit. The state in which the protection device does not cover the operation unit is also referred to as an exposed state or an operating state of the operation unit. In the operating state, a user can draw on the operating unit and operate the range hood by means of it.

The protective device is movably fixed on the range hood. The protector is fixed to a portion of the hood. The protective device can be movably fastened to the smoke barrier, for example. The protective device can be brought into different positions by means of a movable fastening. The protective device can be positioned in particular such that the operating unit is in the covered or operating state. The movement of the protective device on the extraction hood is therefore a movement relative to the operating unit.

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

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

On the one hand, the operating unit can be protected in the covered state by the protective device against particles contained in dirt, in particular steam and smoke, and possibly deposited on the operating unit in the incident flow. Such a deposit of dirt is disadvantageous, for example, in an operating unit which is a touch panel, because if the front side of the operating unit, for example, a section of the flap, is covered with dirt, the sensor of the operating unit can no longer detect actuation of the operating element, if necessary. In other operating units with mechanical keys, the keys can no longer be actuated due to the deposition of dirt. The functional function of the operating unit can be ensured in a simple manner by means of the invention. However, by movably fixing the protective device on the extraction hood and preferably making it possible to execute a 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 a movement unit and a manipulation unit on the range hood, the movement of the protection device can be automatically performed. This facilitates the user in operating the extraction hood on the one hand and ensures a secure protection of the operating unit on the other hand.

According to a preferred embodiment, the protective device is movably fixed to a part of the smoke barrier. For this purpose, fastening means, for example rails, can be provided on the vapor shield and/or on the protective device. Furthermore, sliding elements or rollers may be provided, for example, on the smoke barrier and/or on the protective device. A movable fastening has the advantage over, for example, a pivotable fastening that the protective device does not project into the following space during or after the movement: the user is at least temporarily positioned with his head in the space while cooking. The head freedom of the user 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 barrier structure. The operating unit can be arranged, for example, on the suction frame. The operating unit is preferably arranged on the flap. 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 such that it is at least partially behind the flap. At least some of the components of the operating unit face towards the cooking fume housing and in particular towards the suction opening, said to be at least partially behind the baffle. If keys are provided as operating elements in the operating unit, these operating elements can extend forward through the flap.

In the touch area, electronic components, for example sensors, are preferably arranged behind the screen. In this embodiment, a section of the bezel, by which the touch area is actuated, forms part of the operating unit.

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

The protective device is preferably fixed to the flap. This embodiment is particularly preferred when the operating unit is also arranged on the flap. However, it is also within the scope of the invention for the protective device to also be fastened to the flap 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 extractor 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 partially covers the operating unit. If the protective device has only one protective disk, this protective disk preferably temporarily completely covers the operating unit. If a plurality of protective disks are provided, each of them can temporarily cover a part of the operating unit. However, all the protective disks together here temporarily completely cover the operating unit. By providing the protection disc for covering the operating unit, the visual appearance of the hood can be improved on the one hand. The front side of the extraction hood can be formed in particular by a flat surface of one or several protection disks in the state in which the protection 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 one or more protective discs may be constructed of glass, plastic or metal.

If, for example, only one protective disk is provided, the operating unit can be arranged, for example, on a lateral edge region 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.

In one embodiment, the protective device has two protective disks which are arranged parallel to the flap in the flow direction in front of the flap and which, in the closed state, bear against one another with one edge each and, in the open state, have a gap between them in which the operating unit is located. In this embodiment, it is advantageous if the path around which the individual protective disks must move is reduced by half compared to when only one protective disk is provided. In particular, each protective disk can cover one 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 barrier and preferably in the center of the width of the baffle. This arrangement makes it particularly simple for the user to access the operating unit when the protective disks are moved away from one another.

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

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

The embodiment of the protection means having dimensions covering the entire front side of the smoke barrier is advantageous, since thereby a uniform appearance of the extractor hood can be created. In the embodiment of the protective device with one or more protective disks, the entire front side of the smoke barrier is formed by the protective disk. At least in the state of being brought together (zusammengefahren), a continuous surface is produced in the protective disks, which improves the appearance and at the same time simplifies cleaning.

If the protection device comprises one or more protection discs, the one or more protection discs may be fixed to the smoke barrier structure by fixing means, such as guide rails.

According to a preferred embodiment, the protective device has at least one protective disk and a frame and the protective disk can be held on the smoke barrier, in particular on the screen, in a movable manner by the frame. Here, the frame refers to a member extending at least along the edge of the protective disk. In the simplest case, the frame is therefore 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 placed over the upper edge of the baffle or suction frame by means of this geometry and the protective disk is thereby held in a movable manner on the smoke barrier. But the frame preferably extends over at least two edges of the protective disk. The frame extends in particular over the upper edge of the protective disk and over the lower edge of the protective disk or over the upper edge of the protective disk and over the lateral edges of the protective disk. It is also possible for the frame to extend along the upper, lateral and lower edges of the protective disk. By having the frame extend along one or two further edges of the protective disk in addition to the upper edge, the retention of the protective disk on the smoke barrier structure and in particular on the flap is further improved. However, dirt can also be prevented from entering between the protective disk and the flap from below or from the side by the frame.

According to the invention, the extraction hood has a movement unit for moving the protective device and an actuating unit for actuating the movement unit. The actuating unit can be, for example, a control unit for actuating a motor or another movement unit. The operating unit can preferably be operated without contact. This allows the movement unit and thus the protective device to be moved 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 operating 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 for example be a proximity sensor. The presence of a hand in the vicinity of the operating unit and thus in the vicinity of the extraction hood can be detected, for example, by means of a proximity sensor. 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, the protective disks can be moved away from one another upon recognition of an object and the operating unit between the protective disks can be exposed. If a sensor for detecting a 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 exposes the actuating unit when a predetermined movement is detected. The motion may be, for example, a user's waving. If the sensor is, for example, a sensor for detecting air quality, this sensor can be, for example, an air quality sensor. The air quality to be detected may particularly relate to the presence of dirt, such as particles (e.g. grease or liquid), in the air. In this way, when dirt in the air is detected, the protective device can be moved in such a way that it covers the operating unit and thus protects it from dirt.

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

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

If the operating unit is operated by a remote operating device, manual actuation of the extraction hood by the user is not necessary. Conversely, if the control unit is actuated, for example, via a communication interface with the control unit of the extraction hood, a movement of the protective device can be caused when the wind force of the fan is increased. The protective device can in particular 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 cooking hob, the protective device is brought into a position in which it covers the operating 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 operating 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 actuation unit and a movement unit for moving the protective device is actuated as a function of the acquired information.

The advantages and features described in connection with the extractor hood, if applicable, also apply to the method according to the invention and vice versa.

However, by making the operating unit informed and actuating the movement unit as a function of the informed information, a reliable protection of the operating unit ensures a reliable operation of the extraction hood. Information known on the operating unit, in particular environmental conditions. The environmental conditions are, on the one hand, conditions which relate to the presence or movement of an object in the vicinity of the extraction hood, the presence of dirt or conditions which relate to other devices, for example a remote operating device, a control unit of the extraction hood or other household appliances, in particular a hob. The actuation of the movement unit based on the information relating to the environmental conditions either causes the actuation unit to be covered by the protective device, but also causes the actuation unit to be exposed by the protective device. The possible movements according to the information known have been explained 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, a movement, a threshold value being exceeded and/or a state of another household appliance is detected.

Drawings

The invention is explained more precisely below with renewed reference to the drawing. The figures show that:

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 sectional view of an embodiment of the extractor hood according to the invention according to 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 extractor hood according to the invention according to fig. 3 in a second state; and is

Fig. 5 is a schematic block diagram of the units of an embodiment of a range hood according to the invention.

Detailed Description

Fig. 1 shows a schematic exploded view of an embodiment of a range hood 1 according to the invention. The hood 1 includes a hood casing 10, a smoke shielding structure 11, a protection device 12, and an operation unit 13. A suction opening 100 is processed on the front side of the hood housing 10. A fan (not shown) is provided in the hood 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 11 is formed in the embodiment shown 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 through opening 1100.

An operating unit 13 is arranged on the smoke barrier 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 arranged partly behind the flap 111 in the embodiment shown. The operating unit 13 may, for example, have a housing 31, as shown in fig. 2, in which the electronic components of the operating unit 13 are accommodated. In the embodiment shown, a transparent section 1110 is provided, which is at least light-transmitting. By means of such a section 1110, the housing 131 of the operating unit 13 is closed forward. The actuating element 130 of the actuating unit 13 is visible through the transparent section 1110 and can therefore be actuated through the transparent section 1110. The operating element is in the embodiment shown a display of the region in which the corresponding electronic components are present in the touch panel for detecting an input by the user. However, according to the invention, it is also provided that the operating element 130 is a pushbutton which extends through a corresponding opening (not shown) in the permeable section 1110 of the flap 111, projecting forward of the flap.

The hood 1 also has a protection device 12. The protection device 12 comprises in the embodiment shown two protection discs 120. The two protection disks 120 have the same size. The protective disks 120 have in common a size, that is to say an area corresponding to the area of the baffle 111. The protective 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 of the width of the barrier 111 and is slightly larger than half of 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 vapor shield 11 and in particular to the flap 111.

Fig. 2 shows the extraction hood 1 in a side sectional view. From this view, the position of the components of the extractor hood 1 relative to one another is derived. The hood 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 particularly connected with the hood housing 10. The suction frame 110 is arranged such that the through opening 1100 is aligned with the suction opening 100 of the fume extraction housing 10 in the suction frame 110. The baffle 111 is fixed to the suction frame 110 by a tab (not shown) or other fixing means. The baffle 110 is in front of 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 permeable section 1110 of the flap 111.

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

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

Fig. 3 shows a schematic perspective view of an embodiment of a range hood 1. Fig. 3 shows the cooking hood 1 in a state in which the two protective disks 120 are brought together, i.e. with the edges abutting one another. 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 one another in the horizontal direction, as is indicated by the double arrow in fig. 3, a gap is formed between the lateral edges of the two protective disks 120 facing one another. This state is shown in fig. 4. The baffles 111 are visible through this spacing between the protective disks 120. The permeable section 1110 of the flap 111 and therefore the operating unit 13, in particular also after the protective disks 120 have been moved away from one another, are no longer covered by the protective disk 120 and can therefore be accessed by the user.

As is shown by the arrows in fig. 3 and 4, in this embodiment of the extractor hood 1, air is sucked out both through the underside and through the lateral edges of the extractor hood 1. Air rising upward from the cooktop (not shown) is sucked in, in particular, through a 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, the air then enters the fume extraction housing 10 via the through-openings 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 extraction hood 1 is operating or out through the room walls W to the environment.

The units of one embodiment of the range hood are shown in a schematic block diagram in fig. 5. The extraction hood 1 has in particular a protective device 12, which can have the structure shown in fig. 4, for example. Furthermore, the range hood 1 has a movement unit 101 and a manipulation 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 operator control unit 102 comprises in the embodiment shown a sensor 1020 and an interface 1021. They are for example only illustrated. According to the 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 actuating unit 102 also has a comparison unit 1022.

The mode of operation of the various units will now be explained with reference to an embodiment of the method according to the invention.

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

If, during operation of the extraction hood 1, dirt is present in the air, as detected by the sensor 1020, for example, 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, i.e., the protective disks 120 are brought together. The operating unit 13 is thereby covered by the protective device 12 and is therefore protected from dirt. In the closed state of the protective device 12, air is also sucked into the extractor hood 1 through the gap S and cleaned. Instead of directly actuating the movement unit 101, if, for example, a sensor 1020 detects the presence of dirt in the air, the sensor signal or the amount 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 control unit 102.

In contrast to the prior art, the invention can be used to prevent the key or touch key solutions on a range hood from being exposed and quickly becoming dirty above the cooktop and not being able to be operated comfortably.

In the switched-off state of the extraction hood, the operating unit is preferably completely covered by a protective device, for example a glass plate, so that a reduced and visually stable (beruhigt) appearance results. If a proximity sensor, which may be provided on the range hood, is approached by a hand, the plate can be moved up and the operating unit is exposed. The user can decide whether he wants to leave the tray open during use of the range hood or wants to close the tray again. Smoke is drawn laterally behind the disc, both in the open and closed states.

The advantages of the invention consist firstly in the protection of the operating unit from dirt and the visual stability and simplification of the overall appearance of the extractor hood. Furthermore, by the automatic movement of the protective device, in particular the upward movement of the two disks, for example by using a proximity sensor, no interfering fingerprints are present on the extraction hood anymore. Finally, different environmental conditions may be considered with the present invention.

List of reference numerals

1 cooking fume exhauster

10 oil smoke exhausting casing

100 suction opening

101 movement unit

102 operating unit

1020 sensor

1021 interface

1022 comparison unit

11 smog shielding structure

110 suction frame

1100 penetration opening

111 baffle plate

1110 transmissive section

12 protective device

120 protection disc

121 frame

13 operating unit

130 operating element

131 casing of operating unit

W room wall

And (4) an S gap.

Claims

1. Range hood having a range hood housing (10) with a fan, a smoke screen (11) which is inclined upwards from the horizontal and has a suction frame (110) and a baffle (111) which is arranged in the flow direction in front of the suction frame (110), and an operating unit (13) which is arranged on the smoke screen (11), characterized in that the range hood (1) has a protective device (12) for temporarily covering the operating unit (13), the protective device (12) is movably fastened to the range hood (1), and the range hood (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 hood according to claim 1, wherein the protective device (12) is movably secured to a portion of the smoke barrier structure (11).

3. A ventilator according to claim 1 or 2, characterized in that the operating unit (13) is arranged on the baffle (11).

4. A hood according to any of claims 1-3, wherein the protective device (12) is fixed to the baffle (11).

5. The extraction hood according to any of claims 1 to 4, characterized in that the protective device (12) comprises at least one protective disk (120) which temporarily covers the operating unit (13) at least partially.

6. The extraction hood according to any one of claims 1 to 5, characterized in that the protective device (12) has two protective disks (120) which are located parallel to the baffle plate (111) in front of the baffle plate (111) in the flow direction and which bear against one another with one edge in the closed state and which, in the open state, have a spacing between the protective disks (120), behind which the operating unit (13) is located.

7. A hood according to any of claims 1-6, characterized in that the protective device (12) has a size covering the entire front side of the smoke barrier (11).

8. The extraction hood according to any of claims 1 to 7, characterized in that the protective device (12) has at least one protective disk (120) and at least one frame (121), and in that the protective disk (120) is held movably on the smoke barrier (11), in particular on the baffle (111), by the frame (121).

9. A range hood according to any of claims 1-8, characterized in that the operating unit (102) can be operated without contact.

10. The range hood according to claim 9, characterized in that the operating unit (102) comprises a sensor (1020) for detecting an environmental condition, in particular an object, a movement and/or an air quality.

11. The extraction hood according to any of claims 9 or 10, characterized in that the operating unit (102) has a communication interface (1021) for communicating with a remote operating device, a control unit of the extraction hood or other household appliances, in particular a hob.

12. Method for operating a range hood according to one of claims 1 to 11, characterized in that information is known on the actuating unit (102) and a movement unit (101) for moving the protective device (12) is actuated as a function of the information known.

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