Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
  • F24C15/00—Details
  • F24C15/20—Removing cooking fumes
  • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft

Definitions

• the invention relates to a hob system with an extractor hood.
• a cooktop system with an extractor hood and multiple cooktops is known.
• the extractor hood comprises a fan unit and an intake duct that extends upwards, at least in sections, into an area below the fan impeller to draw cooking fumes into the fan unit.
• a fan motor of the fan unit is suspended from an electronics housing.
• a disadvantage is that vibrations from the fan unit are transmitted to the electronics housing. This leads to increased stress on the electronics and noise emissions.
• a hob system with an extractor and several hobs is also known from DE 20 2013 005 303 U1
• Hob systems are also known from the DE 20 2019 106 084 U1 and the DE 10 2016 123 418 A1 .
• a cooktop system with an extractor device for extracting cooking fumes downwards, having at least one fan unit for sucking in the cooking fumes has an intake duct which extends at least partially into an area below the fan wheel to suck the cooking fumes upwards into the at least one fan unit, thus ensuring particularly safe operation of the cooktop system.
• the cooktop system can be operated particularly robustly and quietly because a fan motor of the fan unit is attached to a support structure arranged below a fan wheel of the fan unit. By attaching the fan motor to the support structure arranged below the fan wheel, the fan motor can be decoupled from components arranged above the fan motor, in particular from a cooktop housing, in particular a housing for the cooktop heating or control.
• the transmission of mechanically stressful vibrations from the fan motor to electronic components arranged above the fan motor can be reduced. This prevents noise from being generated by a vibrating housing located above the fan motor, usually facing the user.
• the intake duct so that cooking fumes are drawn upwards into the fan unit, the fan motor is reliably protected from overflow liquids, making the extractor unit particularly robust in operation.
• a hob system for insertion into a kitchen worktop comprises at least one extractor device for extracting cooking fumes downwards, with at least one cooking fume inlet opening for sucking the cooking fumes downwards, at least one fan unit for sucking in the cooking fumes, which has a fan wheel and a fan motor for rotating the fan wheel, and an intake duct for fluid-conducting connection of the at least one cooking fume inlet opening to the at least one fan unit, which is arranged at least in sections below the fan wheel, and at least one cooking hob, with a cooking hob plate for supporting cooking items, and at least one cooking zone for heating the cooking items arranged on the cooking hob plate, and a fastening of the fan motor to a support structure arranged below the fan wheel.
• the support structure can be arranged entirely beneath the fan wheel. It can also overlap the fan wheel vertically.
• the fan motor and the fan wheel are attached to the support structure arranged below the fan wheel. This also prevents the transmission of vibrations caused by the rotation of the fan wheel to components arranged above the fan motor.
• the fan motor in particular the at least one fan unit, is fastened exclusively to the support structure arranged below the fan wheel.
• the fan motor can rest on the support structure from above.
• the fan motor can in particular be placed on the support structure.
• the fastening of the fan motor to the support structure can be positively and/or non-positively connected, in particular by means of a bolt connection, in particular a screw connection or a rivet connection.
• the fastening of the fan motor to the support structure is preferably designed such that the weight of the fan motor predominantly, i.e. more than 50%, in particular completely, is transferred to the supporting structure in the form of compressive forces.
• connection between the fan motor and the supporting structure is therefore particularly robust and economical to manufacture.
• the fan motor can also be arranged at least partially, in particular completely, below the supporting structure.
• the support structure can extend beyond the fan motor, particularly in plan view. It can allow load transfer into a piece of kitchen furniture, in particular a base cabinet, a wall, or a kitchen worktop.
• the intake duct is designed such that at least a portion of the cooking fumes is sucked upwards into the fan unit.
• the proportion of cooking fumes sucked upwards is preferably at least 25%, in particular at least 50%, in particular at least 70%, in particular 100%.
• the remaining portion of the cooking fumes sucked into the fan unit can, for example, be sucked downwards into it.
• Due to the at least partial upward suction of the cooking fumes a volume of the intake duct arranged below the fan unit is available to absorb overflow liquid.
• the fan motor is thus particularly reliably protected against overflow liquids that penetrate into the intake duct via the at least one cooking fume inlet opening. and, if they come into contact with the live components of the fan motor, can endanger the user and damage the extractor.
• the extractor is particularly safe and robust in operation.
• a further idea not according to the invention, relates to an extractor device with at least one cooking fume inlet and at least one fan unit, which comprises a fan motor and a fan wheel that is reversibly and detachably connected to the fan motor.
• the previously described extractor device is further developed with the features of this extractor device and vice versa.
• a detachable fan coupling can be provided between the fan wheel and the fan motor. This advantageously ensures that the fan wheel can be removed from the extractor device for cleaning purposes.
• the fan wheel can be removed from the extractor through an intake duct and the cooking fume inlet.
• the intake duct can be designed such that the fan wheel must be tilted about a horizontal axis to be removed from the extractor.
• the fan wheel can also be removed from the extractor device through a reversibly closable removal opening in the intake duct and/or an overpressure duct.
• the intake duct and/or the overpressure duct can have a removal cover.
• the removal opening can be designed to allow downward removal of the fan wheel.
• the removal opening is arranged at a bottom of the intake duct and/or the overpressure duct.
• the removal opening is also designed to allow removal of a filter, in particular an odor filter, in particular an activated carbon filter, which is provided in particular in the overpressure duct.
• the cooking vapor inlet opening has a round cross-section, in particular elliptical, in particular circular, or polygonal, in particular rectangular.
• the aspect ratio of the cross-section is preferably at least 1.5, in particular at least 2, in particular at least 3.
• the fan motor is arranged through the cooking fume inlet opening and/or the removal opening for the fan wheel and/or through a bottom of the intake duct and/or the overpressure duct reversibly removable from the extractor fan.
• the fan motor can be removed particularly easily by attaching it to the support structure located below the fan wheel. This allows for economical removal of the fan motor for maintenance purposes and/or for replacement with a replacement motor.
• the fan motor can be designed to be reversibly removable for this purpose.
• the intake duct extends at least partially below the fan impeller.
• the fan impeller overlaps and/or covers the intake duct at least partially in a top view.
• the at least one fan unit is preferably designed as a radial fan.
• the at least one fan unit can also be designed as an axial fan and/or as a cross-flow fan.
• the support structure is formed by the intake duct and/or is connected to the intake duct in one piece, in particular by a material bond. Because the support structure is formed by the intake duct, the structure of the intake duct can be used particularly efficiently. The extractor extraction device can thus be implemented in a particularly space-saving manner and manufactured economically.
• the support structure can also be designed as a component of a housing of the hob system or connected to it. In this case, it is preferably provided that the support structure is decoupled by means of decoupling means, in particular vibration damping agents to decouple from other areas of the housing.
• the supporting structure can also be formed by a separate element from the cooktop system. It can be arranged, for example, on a kitchen cabinet, a wall, or a kitchen worktop, and in particular can be connected in a force-transmitting manner.
• a height h of the liquid reservoir in particular a vertical distance of the overflow collar from a bottom side of the intake channel, is at least 5 mm, in particular at least 10 mm, in particular at least 20 mm, in particular at least 40 mm.
• the extractor device comprises at least one sensor for detecting a liquid level in the liquid reservoir.
• the sensor can be designed as a capacitive sensor and/or a conductivity sensor and/or an optical sensor.
• the sensor is preferably connected to a control device.
• the control device is preferably designed to provide a signal when a limit level of the liquid in the liquid reservoir is reached, which signal causes the extractor device, in particular the fan motor, to be switched off and/or an acoustic and/or visual warning signal to be emitted.
• the liquid barrier is a component of the support structure, with the fan motor being attached to the liquid barrier.
• the liquid barrier structure can thus be used in addition to the mechanical attachment of the fan motor.
• the extractor hood can thus be implemented in a particularly space-saving and economical manner.
• the intake duct extends downwards beyond the fan wheel by at least 20 mm, in particular at least 30 mm, in particular at least 40 mm, in particular at least 60 mm. This allows for a particularly large flow cross-section for the intake of cooking vapors, making the intake particularly flow-efficient. Furthermore, the capacity of a liquid reservoir can be dimensioned sufficiently large.
• the fan motor extends downwards beyond the intake duct by at least 20 mm, in particular at least 30 mm, in particular at least 40 mm, in particular at least 60 mm.
• the intake duct can extend downwards beyond the fan motor by at least 20 mm, in particular at least 30 mm, in particular at least 40 mm, in particular at least 60 mm. This improves protection against overflow liquids.
• the fan axis of the fan wheel is oriented vertically.
• the vertical orientation of the fan axis, in combination with the intake in a vertical upward direction, ensures particularly reliable protection of the fan motor against overflow liquids. Furthermore, this allows the extractor device to be designed to be particularly space-saving.
• the vertical extension of the extractor device between the cooking fume inlet and the underside of the intake duct is preferably a maximum of 250 mm, in particular a maximum of 200 mm, in particular a maximum of 150 mm, in particular a maximum of 100 mm.
• a fan axis of the fan wheel and/or the fan wheel and/or the fan motor are arranged at a distance from the cooking vapor inlet opening and/or a geometric center of gravity of a cooking plate in a plan view.
• the cooking vapor inlet opening is preferably formed as a recess in the cooking plate.
• the cooking plate preferably partially, in particular incompletely or completely, overlaps the fan motor and/or the fan wheel. This advantageously ensures that the fan motor and/or the fan wheel are particularly reliably protected from overflow liquids.
• a distance between the geometric center of gravity of the cooking plate and the fan axis and/or the fan wheel and/or the fan motor is preferably at least 5 mm, in particular at least 10 mm, in particular at least 20 mm, in particular at least 40 mm, in the horizontal direction.
• a distance between the cooking vapor inlet opening and the fan axis and/or the fan wheel and/or the fan motor is preferably at least 5 mm, in particular at least 10 mm, in particular at least 20 mm, in particular at least 40 mm, in the horizontal direction.
• an extractor device for extracting cooking fumes downwards for a hob system for insertion into a kitchen worktop, comprising at least one cooking fume inlet opening, at least one fan unit for sucking in cooking fumes, with a fan wheel and a fan motor for rotating the fan wheel, and a fan mount for attaching the at least one fan unit to a cooktop and/or to a piece of kitchen furniture. It has been recognized that an extractor device with a fan unit and a fan mount, which is designed to attach the fan unit to a cooktop and/or to a piece of kitchen furniture, can reduce the propagation of vibrations emanating from the fan unit in an area of sensitive components, in particular electronic components, and/or the emission of noise.
• the fan mount can be a single-piece or multi-piece design.
• the fan mount preferably comprises at least one fan connection means for attaching to the fan unit and at least one panel connection means for connecting to the cooktop and/or the kitchen unit.
• the fan connection means and the panel connection means are preferably reversibly connectable to one another. This simplifies the installation of the extractor hood.
• the extractor device 3 comprises a cooking fume inlet opening 11, a fan unit 12 for extracting the cooking fumes through the cooking fume inlet opening 11 and an intake duct 13 connected to the fan unit 12 in a fluid-conducting manner for conducting the cooking fumes.
• the cooking vapor inlet opening 11 overlaps a geometric center of gravity 17 of the cooktop plate 9 in a plan view.
• the cooking vapor inlet opening 11 is circular in plan view.
• the cooking vapor inlet opening 11 is arranged centrally on the cooktop plate 9, in particular concentrically to the geometric center of gravity 17.
• the fan unit 12 comprises a fan wheel 18 and a fan motor 19 for rotating the fan wheel 18.
• the fan motor 19 is arranged at a distance from the geometric center of gravity 17 of the cooktop plate 9 in plan view. A distance a GM between the geometric center of gravity 17 and the fan motor 19 is 120 mm.
• the fan wheel 18 is arranged at a distance from the geometric centroid 17 of the cooktop plate and at a distance from the cooking vapor inlet opening 11.
• the distance a GR between the geometric centroid 17 and the fan wheel 18 is 80 mm.
• the distance a ER between the cooking vapor inlet opening 11 and the fan wheel 18 is 40 mm.
• a fan axis 20 of the fan wheel 18 is oriented vertically.
• the fan axis 20 is arranged concentrically with the rotational axis of the fan motor 19.
• the fan axis 20 is arranged at a distance a GA of 160 mm from the geometric center of gravity 17 of the cooktop plate 9.
• the fan motor 19 is connected to the fan wheel 18 via a drive shaft 21 in a torque-transmitting manner.
• the drive shaft 21 is arranged concentrically to the fan axis 20.
• a A liquid barrier 22 is arranged between the cooking fume inlet opening 11 and the fan motor 19.
• the liquid barrier 22 completely surrounds the drive shaft 21 in the circumferential direction.
• the liquid barrier 22 is formed integrally with the intake duct 13.
• the liquid barrier 22 projects upwards above a bottom side 23 of the intake duct 13.
• a height h of the liquid barrier 22, in particular of an overflow collar 24, relative to the bottom side 23 of the intake duct 13 is 40 mm. This reliably prevents the drive shaft 21 or the fan motor 19 from coming into contact with overflow liquid that has penetrated the intake duct 13.
• the intake duct 13 is designed such that the drawn-in cooking vapors are directed upwards toward the fan wheel 18.
• the intake duct 13 is thus designed such that the fan wheel 18 draws the cooking vapors vertically upwards.
• the intake duct 13 extends at least partially into an area below the fan wheel 18.
• the fan wheel 18 overlaps the intake duct 13 in a plan view. This advantageously ensures that the fan wheel 18 also does not come into contact with overflow liquid.
• the fan motor 19 is attached to a support structure 25, which is arranged below the fan wheel 18.
• the support structure 25 is formed by the intake duct 13.
• the intake duct 13 has a surface reinforcement (not shown), in particular reinforcement ribs, for this purpose.
• the reinforcement ribs can be formed integrally with the intake duct 13.
• the reinforcement ribs are arranged on an outer side of the intake duct 13 that is not wetted by the cooking fume flow.
• the intake duct 13 is preferably, in particular in a single Process step, produced in a primary forming process, for example in an injection molding process.
• the liquid barrier 22 is concavely curved to reduce resistance and guide the flow.
• the liquid barrier 22 is arcuate, particularly circular.
• the liquid barrier 22 has a flow guide element 26.
• the flow guide element 26 is designed to distribute the cooking vapor flow with reduced resistance.
• the flow guide element 26 thus ensures a particularly low-loss flow around the liquid barrier 22.
• the flow guide element 26 is funnel-shaped, and in a plan view (not shown), the flow guide element 26 is elliptical, in particular with an aspect ratio of at least 5. Because the fan motor 19 is attached to the support structure 25 exclusively below the fan wheel 18, a disruptive influence of magnetic fields induced by the fan motor 19 on electronics arranged above the fan wheel 18 can be avoided. In particular, vibrations transmitted to an electronics housing 27 can be reduced. The attachment of the fan motor 19 to the support structure 25 at a distance from the electronics ensures damping of corresponding vibrations.
• the electronics may be heating and/or control electronics for the cooktops 2.
• the heating electronics are designed to operate induction cooktops 10.
• the control electronics are part of the control device 4.
• the hob system 1, the hob 2 and the extractor 3 function as follows:
• the control device 4 is in energy-transmitting communication with the cooktop 2 and the extractor hood 3. Individual or multiple induction cooking zones 10 can be activated by user input via the user interface 8. Cooking items 29 placed on the respective induction cooking zones 10 are heated, generating cooking vapors.
• the extractor hood 3 is activated by the control device 4, with electrical power being supplied to the fan motor 19.
• the fan motor 19 causes the fan wheel 18 to rotate about the fan axis 20.
• the cooking vapors are drawn in from an area above the cooking items 29 along the flow path 16 through the cooking vapor inlet opening 11 into the intake duct 13. Grease and odors are filtered out of the cooking vapors in the combination filter 15.
• the cooking fumes are guided along the intake duct 13 and sucked vertically upwards to the fan wheel 18, in particular into a fan housing 30 of the fan unit 12.
• Cooking vapors flow around the liquid barrier 22 in a horizontal plane on both sides of the fan axis 20. Because the liquid barrier 22 features the flow guide element 26, this flow can occur with particularly low resistance. The concave design of the liquid barrier 22 also promotes the efficient upward suction of the cooking vapors toward the fan impeller 18.
• the fan wheel 18 and the fan motor 19 are arranged at a distance from the geometric center of gravity 17 of the hob plate 9 and at a distance from the cooking fume inlet opening 11, these from the overflow liquid entering through the cooking vapor inlet opening 11.
• the upward suction of the cooking vapors protects, in particular, the fan wheel 18 from coming into contact with the overflow liquid.
• the penetration of the overflow liquid to the fan motor 19 and the drive shaft 21 is prevented by the liquid barrier 22.
• the cooktop system 1, in particular the extractor device 3, is thus particularly robust and safe to operate.
• the extractor device 3 comprises a fan attachment 31 for attaching the fan unit 12 to the cooktop plate 9.
• the intake duct 13 for fluidly connecting the cooking vapor inlet opening 11 to the fan unit 12 is designed such that the cooking vapors are sucked downward into the fan unit 12.
• the fan mount 31 is designed in the form of an angle, in particular an angled sheet metal, in particular a metal sheet.
• the fan mount 31 is glued to the cooktop plate 9.
• the cooktop plate 9 is designed as a glass-ceramic plate.
• the extractor device has a liquid barrier 22 formed by the intake duct 13 and arranged upstream of the fan unit 12.
• the fan mount 31 includes at least one vibration damping element.
• the vibration damping element may, for example, comprise a rubber-elastic material.
• the functionality of the Fig. 4 The hob system 1 shown corresponds to the functioning of the hob system 1 according to the embodiment described above.
• the intake duct 13 extending between the cooking vapor inlet opening 11 and the fan unit 12 is designed such that the cooking vapors flow into the fan unit 12 both upwards and downwards.
• the intake duct 13 has two intake duct sections 32, 33 which, in a plan view, overlap the fan wheel 18, wherein the first intake duct section 32 is arranged above the fan wheel 18 and the second intake duct section 33 is arranged below the fan wheel 18. The cooking vapors can thus be supplied to the fan wheel 18 in a particularly flow-efficient manner.
• the fan wheel 18 is detachably connected to the fan motor 19.
• a reversibly detachable fan coupling 35 is provided between the fan wheel 18 and the fan motor 19.
• the hob plate 9 rests on the fan mount 31 from above.
• the fan mount 31 is connected to the hob plate 9, in particular glued to it.
• the assembly of the hob system 1 on the kitchen worktop 6 is particularly easy thanks to the connection of the fan mount 31 to the hob plate 9.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Ventilation (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Food-Manufacturing Devices (AREA)
• Cookers (AREA)
• Baking, Grill, Roasting (AREA)
• Extraction Or Liquid Replacement (AREA)
• Treating Waste Gases (AREA)

Applications Claiming Priority (2)

Related Parent Applications (2)

Publications (3)

Family

ID=74205721

Family Applications (3)

Family Applications After (2)

Country Status (4)

Families Citing this family (13)

Family Cites Families (20)

• 2020
  • 2020-01-24 DE DE102020200864.7A patent/DE102020200864A1/de active Pending
• 2021
  • 2021-01-22 EP EP24171591.1A patent/EP4382813B1/de active Active
  • 2021-01-22 EP EP21186205.7A patent/EP3940300A3/de active Pending
  • 2021-01-22 EP EP21152912.8A patent/EP3855077B8/de active Active
  • 2021-01-22 ES ES24171591T patent/ES3040338T3/es active Active
  • 2021-01-22 ES ES21152912T patent/ES2980631T3/es active Active
  • 2021-01-22 PL PL24171591.1T patent/PL4382813T3/pl unknown
  • 2021-01-22 PL PL21152912.8T patent/PL3855077T3/pl unknown

Also Published As

Similar Documents

Legal Events