EP3692306A1

EP3692306A1 - Vapor extraction device

Info

Publication number: EP3692306A1
Application number: EP18769137.3A
Authority: EP
Inventors: Siegfried Gößler; Daniel NEUNHÄUSERER; Alexander Schadeck; Mario Blersch; Walter Könneker
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-06
Filing date: 2018-09-10
Publication date: 2020-08-12
Anticipated expiration: 2038-09-10
Also published as: JP2020536212A; AU2018344267A1; US11614239B2; CN111226077B; US20200333018A1; DE102017217853B4; AU2018344267B2; CN111226077A; JP7129473B2; EP3692306B1; DE102017217853A1; WO2019068421A1; ES2954710T3

Abstract

The invention relates to a vapor extraction device (2) for extracting cooking vapors downward. The vapor extraction device (2) comprises a fan unit (13) for suctioning in the cooking vapors, the fan unit (13) having a rotationally drivable impeller (20), a fan motor (21) for supplying a driving moment, and a releasable fan clutch (22) for transmitting the driving moment to the impeller (20).

Description

Exhaust hood

The present patent application claims the benefit of German Patent Application DE 10 2017 217 853.1, the contents of which are incorporated herein by reference.

The invention relates to a fume extraction device. Furthermore, the invention is directed to a hob system.

From EP 3 133 349 AI a fume extraction device for the withdrawal of cooking fumes is known down. The extractor device comprises a fan device with a rotatably driven fan wheel, which is mounted on a fan motor. In the operation of the extractor device, the fan device of cooking fumes is flowed through, which can not be completely prevented that even liquid and solid components of the cooking fume come into contact with the fan and settle there. Pollution of the fan wheel reduces its performance and can create a breeding ground for harmful organisms.

It is an object of the invention to improve a fume extractor. This object is achieved by a fume extractor with the features of claim 1. According to the invention, it has been recognized that a drive torque can be transmitted to the fan wheel via a detachable fan clutch. The fan wheel can thus be reversibly coupled to the fan motor. The fan may be reversibly removable in particular from a fan motor. This advantageously achieves that the fan wheel can be cleaned particularly easily, in particular in a dishwasher. The performance of the fan device can thus be maintained and it can be avoided that creates a breeding ground for harmful organisms on the fan.

According to one aspect of the invention, the extractor device comprises the fan device and a discharge channel. The withdrawal channel can have a negative pressure channel section with an inlet opening. The withdrawal channel is preferably designed to remove a region of the withdrawal device which leads the cooking fumes from a region which is not in contact with the cooking fumes. demarcate range coming, in particular below a cooking plate. Preferably, the trigger channel on a fan housing. The fan housing may have a housing opening and an exhaust opening. The housing opening may be formed as a suction opening. The negative pressure channel section can be in fluid communication with a fan housing, in particular with a housing opening of the fan housing. Cooking fumes can thus be guided via the inlet opening along the vacuum channel section via the housing opening into the fan housing.

The inflow opening can be round in a plan view, in particular circular, or in the form of a polygon, in particular in the form of a rectangle. Preferably, the inflow opening is arranged centrally above the fan wheel. Particularly preferably, the inflow opening is arranged concentrically to a rotational axis of the fan wheel. A geometric centroid of the inflow opening can also be arranged at a distance from the axis of rotation in a plan view.

The extractor device may have one or more fan devices. Within the fan housing and a plurality of rotary-driven fan wheels can be arranged.

A drive shaft of the fan motor is preferably arranged concentrically to the axis of rotation. Alternatively, the drive shaft of the fan motor can also be arranged at a distance from the axis of rotation. The drive shaft may be connected directly or indirectly, for example via a drive belt with the fan clutch. It is advantageously achieved by the spaced arrangement of the fan motor, that the space occupied by the extractor device space, in particular in a vertical direction, can be reduced.

In addition, the fan motor can be arranged at a distance from the region directly below the inflow opening. As a result, the reliability can be increased.

The engine may in particular be arranged in a region of the extractor device, which is protected against possibly penetrating through the inflow fluid. In general, the motor may be arranged at a distance from the fan wheel. As a result, the overall space required for the extractor device can be further reduced.

The motor may be arranged in particular in the direction perpendicular to the axis of rotation spaced from the fan. The distance can be at least as large as the diameter of the fan wheel. The distance may in particular be at least 10 cm, in particular at least 20 cm, in particular at least 30 cm. It is preferably at most 100 cm, in particular at most 50 cm, in particular at most 40 cm. In this case, the distance is to be understood as meaning, in particular, the distance between the axis of rotation of the fan wheel and the fan motor, in particular its drive shaft.

The fan motor can also be arranged in alignment with the fan wheel. The drive shaft of the fan motor may in particular be arranged coaxially to the axis of rotation of the fan wheel. The motor can be arranged offset in this case, in particular in the direction of the axis of rotation to the fan.

According to a further aspect of the invention, the fan is coupled directly to the engine, in particular its drive shaft. It may preferably also be coupled without contact to the engine.

According to an alternative, the fan wheel is indirectly coupled to the fan motor.

According to one aspect of the invention, the fan motor is connected via a gear and / or a belt drive with the fan. This allows a particularly flexible arrangement of the motor relative to the fan. In particular, the motor can be arranged at the same height as the fan wheel.

According to a further aspect of the invention, the motor can drive a deflection, in particular in the form of a deflection shaft or a deflection roller, directly or indirectly. The deflector can be used to drive one or more fan wheels. For this purpose, for example, in each case a belt drive or a transmission, in particular a switchable transmission, may be provided. Thus, it is possible to drive one, two, three or more fan wheels with a single fan motor. Here, the individual fan wheels are preferably driven separately from each other. As a result, the flexibility of the fume extraction is further increased.

According to one aspect of the invention, the extractor device has at least one fan motor, which is in each case connected in a rotationally driving manner to at least two, in particular at least three, of the fans. Preferably, all the fans are rotationally driven by means of a single fan motor.

According to a further aspect, the fan motor for this purpose via a rotation transmission means, in particular a gear and / or a belt drive, with the respective fan of the at least one fan, in particular the at least two, in particular at least three fans are in rotationally transmitting connection.

Preferably, an axis of rotation of the at least one fan motor is oriented parallel to a rotational axis of the fan wheel, in particular to the axes of rotation of all the fan wheels.

The axes of rotation of the at least one fan motor and the at least three fans can be oriented vertically.

The axis of rotation of the at least one fan motor can be arranged offset from the axis of rotation of the at least three fans. Preferably, the at least one fan motor overlaps in the direction of its axis of rotation, d. H. in projection perpendicular to its axis of rotation, with at least one, in particular all, of the fan drivingly connected thereto, in particular their fan wheels. In particular, the motor can be arranged at the same height as the fan or wheels. The extractor device can be made particularly compact in the direction of the axis of rotation of the at least one fan motor and / or the at least three fans. The overall height of the

Vapor extraction device may be less than 25 cm, in particular at most 20 cm, in particular at most 15 cm, in particular at most 11 cm, in particular at most 8 cm, in particular maximum 5 cm. The lower limit for the height of the extractor device results from the impeller height, ie from the extension of the impeller in the direction of its axis of rotation.

An extractor device with the at least three fans with a vertical axis of rotation and the overlapping in the vertical direction next to this arranged fan motor with a vertical axis of rotation can be arranged particularly compact under a hob. Thus, a space above and / or below the at least three fans is largely available as storage space.

The fan motor may be mounted directly or via a motor flange on the cooking plate or on a housing for a cooking stove heating. Advantageously, it is achieved that the attachment of the fan motor is particularly space-saving and torsionally rigid.

The fan is preferably cleanable by hand. The fan is preferably formed burr-free. Corners and edges of the fan wheel can be rounded. The fan blades of the fan wheel are preferably spaced apart from one another in such a way that the gaps formed between them are not less than 5 mm at any point. The distance between adjacent fan blades is in particular at least 10 mm, in particular at least 15 mm. As a result, a simple cleaning of the fan is possible. The fan may be designed as a radial fan. Preferably, the axis of rotation of the fan wheel is oriented vertically. In this way, it is advantageously achieved that the fan wheel can be integrated into the fan device in a particularly space-saving manner.

Alternatively, the fan may also be designed as axial fan.

The fan clutch is preferably by hand, especially without tools solvable. Alternatively, the fan clutch can also be solved by means of a tool or by means of a, in particular electrical or purely mechanical, drive element. Preferably, the fan clutch between the fan and the fan motor is arranged. The fan clutch may have a drive-side drive component and a drive-side output component. The output component can with the fan motor, in particular be connected to the drive shaft. Preferably, the drive component is designed as a drive pin. The output component can be connected to the fan. Preferably, the output component is designed as a drive bell. The output component may be rotationally fixed and slidably connectable to the drive component along the axis of rotation. Preferably, the drive component and the output component for the transmission of the drive torque form-fitting, in particular in the form of a feather key or a spline connection or a polygonal shaft connection or a serration together. Advantageously, it is thereby achieved that the drive torque can be transmitted to the fan wheel efficiently about the axis of rotation, wherein the fan wheel along the axis of rotation of the fan motor is removable.

The positive connection for transmitting the drive torque may have a helical toothing. Preferably, the positive connection with respect to the rotation axis is formed spirally. The direction of rotation of the helical or helical connection can be such that a force which closes the fan clutch and which acts in particular in the direction of the axis of rotation, especially the output component, presses against the drive component.

Preferably, the fan, in particular completely, is arranged in the fan housing. The fan motor can be arranged partially or completely outside the outlet duct or a cooking-steam-conducting area. Preferably, all current-carrying or electronic components of the fan motor are arranged outside of the fan housing. The drive shaft of the fan motor can penetrate the fan housing. The fan clutch is preferably disposed within the exhaust duct, in particular the fan housing, or the cooking vaporizing area, wherein the drive component is fixedly mounted on the drive shaft. In this way, it can be achieved that sensitive and / or current-carrying components of the fan motor are protected against contamination and against liquids which can penetrate into the extraction channel or into the cooking-steam-conducting region. According to one aspect of the invention, the fan is reversibly removed from the trigger channel. The fan wheel can be removed from the outlet channel or from the cooking-steam-conducting region via the housing opening. For this purpose, the fan wheel can have an outer diameter. which is smaller than a smallest dimension or a diameter of the housing opening. Alternatively, the fan housing may have a, in particular closable with a shutter, removal opening through which the fan can be removed. The fan can be removed via the removal opening in the vertical direction upwards or downwards or in the horizontal direction from the discharge channel. Advantageously, this achieves that the fan wheel is particularly easy to remove and, in particular in the dishwasher, can be cleaned.

The fan may be removed from the extraction channel, in particular through the inlet opening, by a purely translational movement. Alternatively, the fan impeller can be removed from the extraction duct, in particular through the inflow opening, also via a combined translatory and rotary movement, in particular by tilting about a horizontal axis. For example, the exhaust duct, in particular the inflow opening, be designed such that the fan in a relative to its installed state inclined, in particular by 90 ° with respect to a horizontal axis inclined orientation from the discharge channel, in particular through the inlet opening can be removed. Preferably, a cross section of the inlet opening and / or an inner, the cooking fume leading cross section of the discharge channel, in particular the negative pressure channel section, dimensioned such that it completely covers a longitudinal section and / or a cross section of the fan. The fan wheel can thus be removed in any orientation from the outlet channel, in particular through the inlet opening and / or through the negative pressure channel section. The extraction channel, in particular the inflow opening and / or the negative pressure channel section, can thus have a cross-sectional area which is smaller than the cross-sectional area of the fan wheel. The trigger channel can therefore be designed to save space.

According to one aspect of the invention, the fan wheel can be removed from the extraction channel without tools. Preferably, the fan can also be used without tools in the extractor device. The exhaust duct, in particular the negative pressure duct section, can for this purpose be dimensioned such that the fan wheel, in particular by hand, can be removed therefrom. The fan clutch is preferably detachable by hand. Advantageously, this achieves that the fan wheel can be removed from the withdrawal channel in a particularly simple manner. According to a further aspect of the invention, the fan wheel can be removed via the inlet opening of the outlet channel. The housing opening and / or the negative pressure channel section and / or the inflow opening can be dimensioned in relation to the fan wheel such that it can be removed from the fan housing and the exhaust duct. The fan may be removed, for example, in a tilted position of the fan housing and the exhaust duct. The outer diameter of the fan wheel can also be dimensioned such that it is smaller than the diameter of the housing opening. The outer diameter of the fan wheel may further be dimensioned such that it is smaller than a smallest dimension of a cross section, in particular as a smallest inner diameter of the vacuum channel section. Furthermore, the outer diameter of the fan wheel can be dimensioned such that it is smaller than an inner diameter of the inflow opening. Advantageously, it is achieved that the fan wheel can be removed from the fan housing via the housing opening, the vacuum channel section and the inflow opening. In this case, the hob system, in particular the extractor device, otherwise remain fully assembled. In particular, it is not necessary to open the fan housing or the system housing of the hob system to remove the fan wheel.

According to a further aspect of the invention, the fan clutch is a magnetic coupling. Preferably, the fan clutch is designed as a non-contact magnetic coupling. The fan coupling can be designed such that the drive torque is transmitted via a wall of the outlet duct, in particular of the fan housing, contactlessly on the fan. Such an arrangement has the advantage that only the fan is disposed within the fan housing and current-carrying components outside the fan housing can be arranged. These current-carrying components, in particular the fan motor, are thus protected against contamination and against liquids. In particular, it is possible to arrange a wall of the cooking-steam-conducting region, in particular of the exhaust duct, between the engine and the fan wheel.

Preferably, the fan motor is designed as a brushless external rotor motor. A stator of the fan motor, which comprises current-carrying windings, can be arranged outside the fan housing. A rotor of the fan motor having permanent magnets may be attached to the fan. The detachable fan clutch for transmitting the driving torque on the fan is formed between the stator and the rotor. The transmission of the drive torque is done by means of magnetic alternating fields. The brushless external rotor motor thus forms even the fan clutch. It is advantageous that current-carrying components, in particular by an arrangement outside the fan housing, can be reliably protected against contamination and against liquids by the contactless transmission of the drive torque.

According to one aspect of the invention, the fan clutch has a closing means movable between a release position and a closed position. The closure means can be actuated without tools. The closure means may be formed as a locking pin with axial securing. Such a locking pin may have pins or balls, which protrude in a closed position radially over a shaft of the plug pin and thus ensure a positive connection in the axial direction. The closure means may be arranged between the drive component and the output component. Thus, shifting of the output component along the axis of rotation relative to the drive component is prevented. By actuation of a, in particular spring-loaded, push button of the locking pin can be converted into a release position. The balls or pins are withdrawn in the release position in the shank of the plug pin and do not protrude beyond this. The output component is thus detachable from the drive component. Advantageously, this ensures that the fan clutch can be closed safely and reliably. Due to the tool-free operability of the closure means, this can be easily transferred to the release position.

The closure means may also be formed as a shaft nut or as a spring pin or as a folding pin or as a snap ring. As a result, the fan clutch can be closed particularly effectively along the axis of rotation.

The fan clutch may have a centering means for coaxial alignment of the fan wheel with respect to the axis of rotation. The centering means may be in the form of a centering pin and a centering bore or in the form of a centering seat with a flat, in particular conical bearing surface. The concentricity of the fan wheel can thus be improved. According to one aspect of the invention, the fan clutch has a magnetic connection. The magnetic connection can be arranged between the output component and the drive component. Preferably, the output component is reversibly attached to the drive component, in particular in the direction of the axis of rotation, via the magnetic connection. Preferably, the magnetic connection has at least one magnet attached to the drive component, which magnet cooperates with at least one magnet or a ferromagnetic material attached to the output component. Alternatively, the magnetic connection can also have at least one magnet attached to the output component which cooperates with a ferromagnetic material attached to the drive component. The magnets can be designed as permanent magnets or as electromagnets. The fan clutch is thus, especially in the axial direction, securely closed and particularly simple, especially without tools, solvable.

According to one aspect of the invention, the fan device has a collecting trough for receiving liquids. The drip pan can be arranged below the fan wheel. Preferably, the drip pan between the fan and the fan housing is arranged. The collecting trough can have a capacity of at least 25 ml, in particular at least 50 ml, in particular at least 100 ml, in particular at least 200 ml, in particular at least 300 ml, in particular at least 500 ml. Advantageously, this ensures that contaminants and liquids are deposited essentially in the drip pan and not in the fan housing.

The drip tray is preferably removable from the fan housing. Preferably, the drip pan can also be removed from the extraction channel. The drip tray is thus particularly easy to clean. The sump can be designed dishwasher safe. Preferably, the sump is made of a dishwasher-safe material, in particular of a corrosion-resistant material, in particular of a stainless material, preferably of plastic. According to a further aspect of the invention, the drip pan is attached to the fan wheel. The fan can be removed together with the drip tray from the trigger channel his. The fan and the drip pan can also be removed separately from the extractor device.

Preferably, the fan is removable together with the drip tray from the outlet channel, in particular from the housing opening and / or the inlet opening. The drip pan can be rotatably mounted relative to the fan. Preferably, the drip pan is rotatably connected to the fan housing. In this way it can be prevented that impurities are thrown by centrifugal forces from the drip pan during rotational driving of the fan wheel.

According to a further aspect of the invention, the fan wheel is dishwasher safe. The fan may be made of a dishwasher-safe material, in particular a corrosion-resistant material, in particular made of a stainless material. Preferably, the fan is made of a metal or a plastic. The fan may also be coated with a corrosion protection. Preferably, the fan wheel is deburred and, in particular in the region of edges and corners, rounded. As a result, injuries during removal of the fan wheel can be avoided.

The fan wheel preferably has a weight of at most 1 kg, in particular at most 500 g, in particular at most 300 g, in particular at most 200 g. It is thus very easy.

This contributes to the easier removability of the fan wheel. In addition, this increases the reliability. In particular, it is prevented that an optionally falling fan wheel leads to damage and / or injuries.

In accordance with a further aspect of the invention, the extractor device has a protective grid arranged upstream of the fan wheel for protection against reaching into the fan wheel. The protective grid can on the extractor device, in particular on a

Protective grille seat of the extractor device, reversibly mounted. The protective grid can be mounted, in particular centrally, in the vacuum channel section. Advantageously, it is achieved that the protective grid does not protrude from the outlet channel. Alternatively, the protective grid may be mounted in the plane or above the inflow opening. Preferably the boundary collar has the protective grid seat. The protective grid can thus be attached to the rim collar. The protective grille can be mounted in the region or above the inlet opening. In this way, a guidance of the cooking fumes over the vertical extent of the discharge channel also take place. The cooking fumes can be sucked in the immediate vicinity of their place of origin.

The protective grid can be removable from the protective grid seat, in particular upwards, in particular in the vertical direction. The protective grid can also be pivoted into an open position. For this purpose, the protective grid can be connected in an articulated manner to the protective grid seat. Alternatively, the protective grid can be displaceably guided in the protective grid seat, in particular mounted parallel to the cooking zone plate. Advantageously, it is thereby achieved that the protective grid can be moved between a closed position and an open position without it having to be removed entirely from the extractor device. The protective grid preferably completely covers the vacuum channel section and / or the inlet opening. To carry out the cooking fumes, the protective grid may have round, in particular circular, or rectangular, in particular square, flow openings. The flow openings are preferably dimensioned such that a reaching through with the hands or with the fingers is prevented. Injuries of the hands or fingers by reaching into the rotating fan wheel can be reliably prevented.

According to a further aspect of the invention, the protective grid has a grease-feeder insert. The grease feeder insert may be attached to the guard. Alternatively, the protective grid can be designed as a grease-feeder insert. Advantageously, this reduces the number of parts and / or a particularly compact design can be achieved.

According to a further aspect of the invention, the fan device has a sealing means for liquid-tight sealing of the fan motor with respect to the exhaust duct of the extractor device. This advantageously achieves the effect that liquids entering the extraction channel through the inlet opening can not penetrate as far as the fan motor. The electronic components of the fan motor are thus protected from damage, in particular by short circuits. The sealing means may be formed as a shaft seal, in particular as a radial and / or axial shaft seal. The sealing means can be arranged between the drive shaft of the fan motor and the exhaust duct, in particular the fan housing. The sealing between the extraction duct, in particular the fan housing, and the drive shaft preferably takes place in a region between the fan motor and the fan coupling.

In accordance with a further aspect of the invention, the extractor device has a circuit breaker connected to an energy supply of the fan motor. Preferably, upon operation of the circuit breaker, the operation of the fan motor can be interrupted and / or the rotational movement of the fan wheel can be stopped. Advantageously, this ensures that the protection of the operator from injury, the power supply to the fan motor is interrupted or braked the rotational movement of the fan, in particular stopped. Preferably, the circuit breaker is designed as a light barrier. The circuit breaker may be arranged upstream of the fan wheel. By an upstream attachment of such a circuit breaker reaching into the active fan can be avoided by the light barrier is already interruptible when reaching into the inlet or in the trigger channel, whereby the rotational movement of the fan can be stopped.

Alternatively, the circuit breaker may also be a window toggle switch or a flue gas sensor or a temperature sensor or a pressure sensor. Advantageously, this can be achieved that a simultaneous operation of the fan motor and a fireplace, in particular a fireplace furnace is only released when there is no danger that flue gases of the fireplace are sucked by the extractor device.

The circuit breaker may also be designed as a button or magnetic switch or as a distance sensor. Preferably, the circuit breaker is in signal communication with a control unit for controlling the extractor device. Advantageously, it is thereby achieved that upon actuation of the circuit breaker, the power supply to the fan motor can be interrupted and / or a braking program for faster deceleration of the fan motor can be initiated. According to another aspect of the invention, the circuit breaker for detecting the attachment of the protective grid is formed on the protective grid seat. The operation of the fan motor can be interrupted in the absence of attachment of the protective grid on the guard seat. The circuit breaker may be attached to a bottom of the cooking surface plate or to an outside of the exhaust duct. The circuit breaker may be mounted in the form of a button or in the form of a distance sensor in the grille seat. Advantageously, this ensures that the circuit breaker is reliably actuated in the absence of attachment of the protective grid to the protective grid seat.

According to a further aspect of the invention, the fan housing has a fan housing projection. The fan housing projection can be arranged above the housing opening. The grease filter insert may be attached to the fan housing boss via a filter carrier. The grease filter insert preferably has at least one sidewall permeable to cooking fumes and / or a bottom region permeable to cooking fumes.

The filter carrier may have a carrier seat for receiving the grease filter insert. The filter carrier is preferably formed in a central region, in particular within the carrier seat, permeable to cooking fumes. In a region of the filter carrier that is located outside the carrier seat in a plan view, the filter carrier can likewise be designed to be permeable to cooking fumes. Preferably, the filter carrier has at least three, in particular at least four, in particular at least six, carrier feet, via which it is attached to the fan housing projection. It is thereby advantageously achieved that cooking fumes can be sucked through both the at least one side wall of the grease filter insert and past the filter seat, and also through the bottom region of the grease filter insert and through the central recess of the filter carrier. The filter effect is improved by the large flow area of the grease filter insert. Preferably, an upper edge of the grease filter insert is in gas-tight connection with the vacuum channel section. According to another aspect of the invention, the grease filter insert may be integral with the

Be connected guard. Advantageously, it is thereby achieved that the removal of the grease filter insert from the withdrawal channel can be made particularly simple. The filter carrier may have in a plan view in its outer edge region a carrier trough for receiving liquids. Liquids that penetrate between the grease filter insert and the extraction channel can be absorbed in the carrier tray.

The grease filter insert may be in the form of tubular, in particular cylindrical, in particular circular cylindrical, be formed. Preferably, the side walls of the grease filter insert are designed to be permeable to cooking fumes. The grease filter insert may be in gas-tight connection with the filter carrier. The guard may be attached to the grease filter insert. An inflow gap may be formed between the protective grid and the edge of the inflow opening. The inflow gap may at least partially surround the protective grid in a plan view. The protective grid can be gas-tight. Cooking fumes can be so sucked into the fan housing via the inflow, through the side walls of the grease filter insert, in particular from the outside in and through the filter carrier.

Preferably, the filter carrier, in particular together with the grease filter insert and the protective grid, from the extraction channel, in particular from the negative pressure channel section, can be removed through the inlet opening. Another object of the invention is to improve a hob system.

This object is achieved by a cooktop system with at least one extractor device according to the preceding description and at least one hob with at least one cooking point for heating cooking product. The advantages arise from those of the extractor device.

According to one aspect of the invention, the hob system may be formed as a mounting unit. Preferably, the at least one extractor device and the at least one hob are attached to a common support frame and / or interconnected by a common system housing. Due to the design of the cooktop system as an assembly unit, the assembly effort when inserting the cooktop system into a kitchen Worktop can be significantly reduced. Installation difficulties and damage during installation can be reduced.

The hob system may have a particularly compact design. In particular, it can have a particularly low overall height. The overall height of the hob system is in particular at most 25 cm, in particular at most 20 cm, in particular at most 15 cm, in particular at most 11 cm, in particular at most 8 cm. It has been shown that it can be 5 cm or less. The hob system can be modular. In this case, the at least one extractor device and / or the at least one cooktop can be present as separate modules that are not connected to one another, in particular when they are installed in the kitchen countertop. Preferably, these separate modules can be connected to one another via suitable mechanical and electronic interfaces. Advantageously, this ensures that the cooktop system can be designed to be particularly flexible and adaptable to customer requirements.

Further features, advantages and details of the invention will become apparent from the following description of the extractor device and the hob system with reference to the figures. Show it:

1 is a perspective view of a hob system with a hob and a fume extraction device,

2 is a sectional view of the hob system in Fig. 1, wherein a fan is non-rotatably connected via a fan clutch with a fan motor,

Fig. 3 is a sectional view of the extractor device in Fig. 1, wherein the

Fan clutch is released and the fan is removed from the top of the trigger channel,

4 is a plan view of the hob system in Fig. 1, Fig. 5 is a sectional view of a hob system according to another

Exemplary embodiment, according to which a grease filter insert is arranged via a filter carrier on a fan housing projection of a fan housing and is formed integrally with the protective grid,

Fig. 6 is a sectional view of a hob system according to another

Exemplary embodiment, according to which the grease filter insert is arranged on the fan housing projection of the fan housing via a filter carrier and an inflow gap is formed between the protective grid and the inlet opening,

Fig. 7 is a sectional view of a hob system according to another variant and

8 is a plan view of the hob system of FIG .. 7

In the following, different details of a hob system 1 and a fume extractor 2 will be described with reference to FIGS. 1 to 4.

In Fig. 1, a hob system 1 is shown with a fume extractor 2 for the withdrawal of cooking fumes down and a hob 3 for heating food. The hob system 1 is designed as a compact mounting unit and has a mounting flange 4 for attachment to a kitchen worktop 5 and a system housing 6.

The hob comprises four cooking stations 7 and a control unit 8. Both the cooking zones 7 and the control unit 8 are arranged on a cooking surface plate 9.

The cooking surface plate 9 is formed as a ceramic cooking plate. The system housing 6 is glued to the cooking surface plate 9. The mounting flange 4 is formed by the edge region of the cooking surface plate 9. The cooking surface plate 9 rests on the kitchen worktop 5 from above. The cooking surface plate 9 has a trigger recess 10 for the entry of cooking fumes. The withdrawal recess 10 is circular in a plan view and is centrally located. arranged opposite the cooking surface plate 9. The cooking surface plate 9 has at the edge of the trigger recess 10 a peripheral boundary collar 11.

The control unit 8 is fixed to the system housing 6. The control unit 8 has not shown touch-sensitive sensors, which can be operated via an upper side of the cooking surface plate 9. The control unit 8 communicates with the cooking zones 7 in signal.

The extractor device 2 is arranged within the system housing 6. The extractor device 2 has a discharge channel 12 and a fan device 13. The withdrawal channel 12 has a vacuum channel section 14, which extends between the withdrawal recess 10 and the fan device 13. For sucking the cooking fumes in the discharge channel 12, this has an inflow opening 15. The inflow opening 15 is covered by a protective grid 16. The protective grid 16 rests on the boundary collar 11. The protective grid 16 is permeable to cooking fumes and is designed such that it prevents reaching into the vacuum channel section 14.

In the negative pressure channel section 14, a grease filter insert 17 is arranged. The grease feeder insert 17 is substantially cylindrical. A grease filter collar 18 of the grease filter insert 17 is connected in a fluid-tight manner to the vacuum channel section 14. The grease filter Rragen 18 is supported in the vertical direction from above on a channel projection 19 from. The grease filter insert 17 is dishwasher safe.

The fan device 13 comprises a rotationally driven fan wheel 20, a fan motor 21 for providing a drive torque and a detachable fan clutch 22 for transmitting the drive torque to the fan wheel 20. The fan wheel 20 is arranged in a fan housing 23. The fan housing 23 is attached to the system housing 6.

The fan housing 23 has a housing opening 24 and an exhaust opening 24a. The vacuum channel section 14 is connected in a fluid-tight manner to the fan housing 23 in the region of the housing opening 24. The fan housing 23 is thus in fluid-conducting connection with the inflow opening 15. Via the blow-out opening 24a, the fan housing is in fluid-carrying connection with an overpressure channel section (not illustrated). The housing opening 24 and the negative pressure channel section 14 are circular in cross section. The housing opening 24, the negative pressure channel section 14 and the inflow opening 15 are formed such that the fan wheel 20 can be removed therefrom from the fan housing 23 and the outlet channel 12. An outer diameter D of the fan wheel 20 is less than the inner diameter of the housing opening 24, the negative pressure channel section 14 and the inflow opening 15. The grease filter insert 18 can be removed from the vacuum channel section 14 and the protective grid 16 can be removed from the boundary collar 11. The fan motor 21 is attached to the system housing 6. To transmit the drive torque of the fan motor 21 acts on the fan clutch 20 via the fan clutch 22. The fan clutch 22 includes a drive component in the form of a drive pin 25 and an output component in the form of a drive bell 26. The drive pin 25 is rotatably connected to a drive shaft of the fan motor 21, not shown connected. The drive bell 26 is rotatably connected to the fan 20. For transmitting the drive torque between the drive pin 25 and the drive bell 26, the fan clutch 22 has a form-fitting profile in the form of a splined connection. The drive pin 25 is formed as a splined shaft and the drive bell 26 as a splined hub. For fastening the fan wheel 20 to the drive pin 25 along a rotation axis 27, the fan clutch 22 has a closure means 28. Pins 29 of the closure means 28 engage in a closed position in bores 30 of the drive bell 26. The fan 20 is thus connected in a form-fitting manner with the drive bell 26 along the axis of rotation 27. Between the fan 20 and the fan housing 23, a collecting tray 31 is arranged for receiving liquids. The drip pan 31 is rotatably connected to the fan housing 23. An outer well diameter W of the drip pan 31 is dimensioned such that it can be removed through the housing opening 24, the vacuum channel section 14 and the inflow opening 15 from the fan housing 23 and the discharge channel 12 upwards. The drip pan 31 and the fan 20 are dishwasher safe. The drip pan 31 and the fan 20 are made of a stainless metal, deburred and rounded at corners and edges. On the underside of the cooking surface plate 9, a circuit breaker 32 is arranged. The circuit breaker 32 is connected via a signal connection 33 with a power supply of the fan motor 21. The protective grid 16 is attached to a protective grid seat 34 formed by the rim collar 11 and the vacuum channel section 14. The circuit breaker 32 is formed to detect the attachment of the protective grid 16 to the protective grid seat 34. If the protective grille 16 is attached to the protective grid seat 34, the operation of the fan motor 21 can be interrupted via the signal line 33.

Between the drive shaft of the fan motor 21 and the fan housing 23, a not shown sealing means is arranged. The sealant ensures a fluid-tight seal of the fan motor 21 with respect to the fan housing 23 and the discharge channel 12. The sealing means is designed as a shaft seal.

The operation of the hob system 1 is as follows: By means of the control device 8, the individual cooking zones 7 and the fan motor 21 can be controlled. An operator of the cooktop system 1 can activate or deactivate the cooking zones 7 and the fan motor 21 via the control unit 8 and set the power output via the cooking zones 7 and the fan motor 21. The control unit 8 is for this purpose in signal communication with the cooking areas 7 and the fan motor 21.

The extractor device 1 is shown in Fig. 2 in an operational state. The fan 20 is disposed in the fan housing 23 and rotatably connected to the drive pin 25 via the drive bell 26. The closure means 28 is in a closed position in which the fan clutch 22 is detected. The fan wheel 20 is thus connected fixedly to the drive pin 25 along the axis of rotation 27. The grease filter insert 17 is disposed in the negative pressure passage section 14. The guard 16 is attached to the guard seat 34. By attaching the protective grid 16 to the protective grid seat 34 is the Power supply to the fan motor 21 of the circuit breaker 32 is released. The drip pan 31 is arranged below the fan wheel 20.

By activating the fan motor 21, the rotatably mounted fan wheel 20 is acted upon by the drive shaft and the fan clutch 22 with the drive torque. The fan 20 is set in a rotational movement about the axis of rotation 27. As a result, a negative pressure is generated in the region of the vacuum channel section 14. The cooking fumes formed above the cooking surface plate 9 are withdrawn through the protective grid 16 into the inflow opening 15 downwards. The cooking fumes pass through the fat filter insert 17 in the region of the vacuum channel section 14, whereby oils and fats are removed from the cooking fume stream by the grease filter insert 17. The thus cleaned cooking fumes pass through the housing opening 24 into the fan housing 23.

Solid or liquid constituents remaining in the cooking vapor can settle in the collecting vessel 31. Partially, these liquid or solid components of the cooking fumes also attach to the fan 20. This can cause unpleasant odors and the performance of the extractor device 2 can be reduced. The fan 20 is removable for cleaning from the fan housing 23 and the discharge channel 12. In Fig. 3, the hob system 1 is shown in a removal state. The fan motor 21 is deactivated via the control unit 8. The protective grid 16 is removed from the protective grid seat 34 and removed upwards. The grease filter insert 17 is removed from the vacuum channel section 14 through the inlet opening upwards. The closure means 28 is in a release position, wherein the pins 29 are arranged completely within the drive pin 25. The fan 20 is thus opposite to the drive pin 25 in

Directed the axis of rotation 27 shifts. The fan 20 is removed via the housing opening 24, the negative pressure channel section 14 and the inflow opening 15 from the fan housing 23 and the discharge channel 12 in the vertical direction upwards. Likewise, the drip pan 31 is removed from the fan housing 23 and the discharge channel 12 upwards.

By removing the guard 16 from the guard seat 34, the circuit breaker 32 is actuated. The power supply of the fan motor 21 is interrupted by the circuit breaker 32. chen. Activation of the fan motor 21 is thus not possible. The fan 20 and the drip pan 31 can be safely cleaned.

The installation of the drip pan 31 and the fan 20 in the fan housing 23 in the reverse order as their removal. Similarly, the grease filter insert 17 is again inserted into the negative pressure channel section 14 and the protective grid 16 can be attached to the protective grid seat 34. The extractor device 2 is thus again in its ready state. According to a further embodiment of the invention, not shown, the fan clutch 22 is formed as a magnetic coupling. The drive bell 26 is rotatably mounted relative to the drive pin 25. The drive pin 25 is rotatably connected to the fan housing 23. The drive pin 25 is designed as a stator and has electrically conductive windings. The drive bell 26 is designed as a rotor and comprises permanent magnets. When the windings are acted upon by electrical energy, they interact with the permanent magnets of the drive bell 26, as a result of which the drive torque is transmitted contactlessly to the fan wheel 20. Since there is no relative movement between the drive pin 25 and the fan housing 23, a seal between the fan housing 23 and the components of the fan motor 21 through which the electrical current flows can be made particularly robust and secure. In this case, the fan motor 21, in the form of an external rotor motor, is formed by the windings arranged in the drive pin 25 and the permanent magnets connected to the fan wheel 20.

The fan 20 is rotatably mounted on the drive pin 25. The drive wheel 20 can be removed from the drive pin 25 along the axis of rotation 27 in a vertical upward direction. The operation of the hob system 1 according to the second embodiment substantially corresponds to the operation according to the first embodiment.

A further embodiment of the invention will be described with reference to FIG. In contrast to the preceding embodiment, the grease filter insert 17 is not attached via the channel projection 19 to the negative pressure channel portion 14 of the discharge channel 12. The negative pressure passage portion 14 is formed without a passage projection 19. The fat film ter insert 17 is supported on a grease filter carrier 35. The grease filter carrier 35 is attached to a fan housing projection 36 of the fan housing 23. The filter support 35 has four support feet, via which it is in contact with the fan housing projection 36. In addition, the filter carrier 35 has a central recess arranged in the region of the axis of rotation 27 and is thus permeable to cooking fumes. The filter support 35 is reversibly connectable to the grease filter insert 17 and to the fan housing projection 36. The filter carrier 35, as well as the grease filter insert 17 from the discharge channel 12, in particular from the negative pressure channel section 14 and through the inflow opening 15, reversibly removed. The grease filter insert 17 has a permeable for cooking fumes side wall. Cooking fumes can thus, according to the schematically drawn flow lines 36a, be sucked through the side walls of the grease filter insert 17 and between the support feet of the filter carrier 35 into the fan housing 23. The fat filter insert 17 is in its radially outer edge region in gas-tight connection with the negative pressure channel section 14.

6, a further embodiment of the invention is described. In contrast to the preceding embodiments, the grease filter insert 17 is formed kreiszylin- derförmig and mounted on the filter support 35 gas-tight to the fan housing projection 36. In addition, an inflow gap 37 is formed between the protective grille 16 and the inflow opening 15. The negative pressure channel section 14 has no channel projection 19. The filter support 35 is formed without support feet and is in gas-tight connection with the grease filter insert 17 and the fan housing 23. The filter support 35 has a permeable for cooking fumes central recess. This central recess is arranged in the region of the axis of rotation 27. The filter carrier 35 comprises a carrier trough 38, which is arranged in a radially outer region of the filter carrier 35 opposite the axis of rotation 27. The carrier trough 38 is designed to receive liquids.

The side wall of the grease filter insert 17 is designed to be permeable to cooking fumes. The guard 16 is attached to the grease filter cartridge 17. From the fan 20 sucked cooking fumes pass, according to the schematically drawn flow lines 36a, on the Einströmspalt 37 and from the outside through the side wall of the grease filter insert 17, through the central recess of the filter support 35 in the fan housing 23rd Both the grease filter insert 17 and the filter carrier 35 and the protective grid 16 are reversibly removed from the top of the discharge channel 12, in particular through the inflow opening 15.

In the following, with reference to FIGS. 7 and 8, a further variant of the hob system 1 will be described. For the basic structure of the hob system 1 reference is made to the preceding description of the other variants. In this variant, the motor 21 is coupled to the fan wheel 20 via a drive, in particular a belt drive 40. The belt drive 40 comprises a first drive belt 41. The motor 21 is coupled to a deflection 42 via the first drive belt 41. As a deflection 42 is a rotatably mounted pin or cylinder, in particular a hollow cylinder. The deflection 42 is coupled via a second drive belt 43 to the fan 20.

About the deflection 42 is a particularly flexible arrangement of the fan motor 21 relative to the fan 20 possible. According to a variant, not shown in the figures, the fan motor 21 may also be connected directly to the fan wheel 20 via a drive belt.

According to a further alternative, not shown in the figures, the fan motor 21 can be coupled directly or indirectly, ie in particular via a deflection 42, to two, three, four or more fan wheels. The fan wheels are in this case preferably independently of one another coupled to the fan motor 21.

As can be seen by way of example from the schematic figure 7, the motor 21 can be arranged laterally offset from the fan wheel 20. The motor 21 may be arranged in particular in the vertical direction overlapping the fan wheel 20. It may in particular be arranged at the same height as the fan wheel. This allows a particularly compact design of the hob system 1, in particular a particularly small height h of the same. The height h of the Hob system 1 is essentially limited by the height HIL of impeller 20 of the fan. The impeller height IIL is in particular at most 10 cm, in particular at most 8 cm, in particular at most 6 cm, in particular at most 5 cm, in particular at most 4 cm. The total height h of the hob system 1 may be 5 cm or less. It has been found that it is even possible to form a hob system 1 with integrated extractor device with a total height h of 4 cm. In general, the total height h of the hob system 1 is at most 25 cm, in particular at most 20 cm, in particular at most 15 cm, in particular at most 1 1 cm, in particular at most 8 cm, in particular at most 5 cm.

The motor 21 is arranged hanging. He is particularly hung on the cooking surface plate 9. It can also be arranged on a housing element of the hob system 1, for example on a housing element of a housing for accommodating the hob electronics. This allows a mechanical decoupling of the engine from the cooking surface plate 9.

Between the motor 21 and a bottom 44 of the system housing 6, a distance, in particular in the form of a free space, is arranged. This leads to an increased security, in particular to an insensitivity of the hob system 1, in particular of the motor 21, against possibly in the system housing 6 penetrating liquid. The distance between the motor 21 and the bottom 44 of the system housing 6 may be at least 1 cm in particular.

According to an alternative, not shown, the engine may also be mounted standing. According to a further alternative, not shown in the figures, the fan wheel 20 is arranged substantially directly below the inflow opening 15. The distance between an upper edge of the fan wheel 20 and a lower side of the cooking surface plate 9 is in particular at most 3 cm, in particular at most 2 cm, in particular at most 1 cm. As a result, an even more compact design of the hob system 1, in particular an even lower overall height h thereof is made possible. In this alternative, advantageously, a plurality of fan wheels 20 may be provided. The fan wheels 20 may be arranged in the areas between the cooking areas 7. In particular, in an arrangement of a plurality of fan wheels 20 in the region between the cooking zones 7, the individual fan wheels 20 may advantageously be made compact. In particular, they may have an outer diameter of at most 250 mm, in particular at most 200 mm, in particular at most 160 mm, in particular at most 150 mm, in particular at most 130 mm, in particular at most 120 mm, in particular at most 100 mm.

In the case of a plurality of fan wheels 20, advantageously each of the fan wheels 20 can be reversibly removed from the hob system 1 via an inflow opening 15. In this case, each of the fan wheels 20 may be assigned its own, separate inflow opening 15.

Claims

claims

1. Vapor extraction device for deduction of cooking fumes down, comprising

a vent channel (12) for guiding the cooking fumes and

- A fan device (13) for sucking the cooking fumes with

a rotationally driven fan wheel (20) which can be arranged in the extraction duct (12), a fan motor (21) for providing a drive torque and a detachable fan clutch (22) for transmitting the drive torque to the fan wheel (20),

wherein the fan wheel (20) via an inflow opening (15) from the discharge channel (12) can be removed.

2. Vapor extraction device according to claim 1, characterized in that the fan motor (21) outside of the exhaust duct (12) is arranged.

3. Vapor extraction device according to one of the preceding claims, characterized in that the fan motor (21) in the direction perpendicular to a rotation axis spaced from the fan wheel (20) is arranged. 4. Vapor extraction device according to one of claims 1 to 3, characterized in that the fan wheel (20) via a gear and / or a belt drive or non-contact to the fan motor (21) is coupled.

5. Vapor extraction device according to one of the preceding claims, characterized in that the fan wheel (20) from the extraction channel (12) can be removed without tools.

6. Vapor extraction device according to one of claims 1 to 5, characterized in that the fan clutch (22) is a magnetic coupling. 7. Vapor extraction device according to one of claims 1 to 6, characterized in that the fan clutch (22) between a release position and a closed position movable closure means (28), wherein the fan clutch (22) is detachable only in the release position of the closure means (28).

8. Vapor extraction device according to one of claims 1 to 7, characterized by a collecting trough (31) for receiving liquids, wherein the collecting trough (31) through the inflow opening (15) from the withdrawal channel (12) can be removed.

9. Vapor extraction device according to claim 8, characterized in that the collecting trough (31) on the fan wheel (20) is mounted.

10. Vapor extraction device according to one of claims 1 to 9, characterized in that the fan wheel (20) is formed dishwasher safe.

11. Vapor extraction device according to one of claims 1 to 10, characterized by an upstream of the fan wheel (20) on a protective grid seat (34) reversibly attachable

Protective grille (16) for protection against reaching into the fan wheel (20).

12. Vapor extraction device according to claim 11, characterized in that the protective grid (16) has a grease filter insert (17).

13. Vapor extraction device according to one of claims 1 to 12, characterized in that the fan device (13) has a sealing means for liquid-tight sealing of the fan motor (21) relative to the discharge channel (12). 14. Vapor extraction device according to one of claims 1 to 13, characterized by a with an energy supply of the fan motor (21) in connection protection switch (32) for interrupting the operation of the fan motor (21).

15. Vapor extraction device according to claim 14, characterized in that the protective switch (32) for detecting the attachment of the protective grid (16) to the protective grid seat

(34) is arranged, wherein the operation of the fan motor (21) is interrupted in the absence of attachment of the protective grid (16) on the protective grid seat (34).

16. comprising hob system

at least one vapor extraction device (2) according to one of claims 1 to 15 and at least one hob (3) with at least one cooking point (7) for heating cooking product.

17. hob system according to claim 16, characterized by a total height of at most 11 cm.