EP3396254B1 - Gas cooking hob comprising a control element - Google Patents

Gas cooking hob comprising a control element Download PDF

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Publication number
EP3396254B1
EP3396254B1 EP17168503.5A EP17168503A EP3396254B1 EP 3396254 B1 EP3396254 B1 EP 3396254B1 EP 17168503 A EP17168503 A EP 17168503A EP 3396254 B1 EP3396254 B1 EP 3396254B1
Authority
EP
European Patent Office
Prior art keywords
shaft
cooking hob
control element
gas cooking
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17168503.5A
Other languages
German (de)
French (fr)
Other versions
EP3396254A1 (en
Inventor
Sara BARUCCI
Antonio Scognamiglio
Elvio Zanon
Paolo Farris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP17168503.5A priority Critical patent/EP3396254B1/en
Priority to ES17168503T priority patent/ES2772715T3/en
Publication of EP3396254A1 publication Critical patent/EP3396254A1/en
Application granted granted Critical
Publication of EP3396254B1 publication Critical patent/EP3396254B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles

Definitions

  • the present invention relates to a gas cooking hob comprising at least one control element according to the preamble of claim 1.
  • control signals are often indicated by a control lighting including light emitting diodes (LED).
  • the control lighting is directly or indirectly controlled by a control element arranged on the gas cooking hob.
  • the control element includes a moveable shaft with sliding contacts. However, if the sliding contacts are contaminated by cooking liquids, the function of the control element is impaired.
  • US 2012/0042745 discloses an operating control device for adjusting the power of a heating device.
  • a rotary knob has an off position and a working position. In the working position the rotary knob is rotatable over a working angle. A counterforce increase with the rotation angle of the rotary knob.
  • a magnetic element is arranged at the rotary knob. Magnetic sensors are arranged in the stationary part of the operating control device. The magnetic sensors are responsive to the magnetic elements and generate signals regarding to the rotational position of the rotary knob. However, the position detected by the magnetic sensors is not indicated by the operating control device.
  • the object is achieved by the gas cooking hob with a control element according to claim 1.
  • the core of the present invention is the contactless detection of the position and/or orientation of the shaft by the the magnetic sensor, wherein the control lighting is controlled via said magnetic sensor.
  • a contamination of the shaft and the permanent magnet does not impair the function of the control element.
  • the position detected by the magnetic sensors is indicated by the control element.
  • the moveable shaft is rotatable around its longitudinal axis.
  • the moveable shaft is rotatable by the user.
  • the moveable shaft is slidable along its longitudinal axis.
  • the magnetic sensor is a hall sensor.
  • a gas flow to a corresponding gas burner may be controlled by a torsion angle of the shaft.
  • the gas flow may be controlled by a mechanic valve via the shaft.
  • the gas flow is controlled by the mechanical valve in the same time of the control lighting by the magnetic sensor.
  • one direction of rotation of the shaft corresponds with an activation of the corresponding gas burner, while a contrary direction of rotation of the shaft corresponds with a deactivation of the corresponding gas burner.
  • the control lighting is activated by rotating the shaft in the direction corresponding with the activation of the corresponding gas burner.
  • control lighting may be deactivated by rotating the shaft in the direction corresponding with the deactivation of the corresponding gas burner.
  • At least one light emitting diode of the control lighting is deactivated after a predetermined time, when the corresponding gas burner has been deactivated by rotating the shaft.
  • control lighting includes at least one light emitting diode for indicating a temperature icon.
  • the at least one light emitting diode of the control lighting is arranged beneath a top panel of the gas cooking hob.
  • FIG 1 illustrates a schematic sectional side view of a control element 10 for a gas cooking hob according to a preferred embodiment of the present invention.
  • the control element 10 comprises a shaft 12, a permanent magnet 14, a printed circuit board 18 and a magnetic sensor 22.
  • the magnetic sensor is a hall sensor 22.
  • the shaft 12 is rotatable by the user in order to activate, deactivate and/or adjust a corresponding gas burner.
  • the shaft 12 is arranged vertically. In general, the shaft 12 may have an arbitrary orientation.
  • the shaft 12 is rotatably attached at the control element 10 of the gas cooking hob.
  • the shaft 12 is rotatable around its longitudinal axis.
  • the shaft 12 is slidable relative to the control element 10 of the gas cooking hob.
  • the shaft 12 is slidable along its longitudinal axis.
  • the permanent magnet 24 is rigidly attached at the shaft 12.
  • the permanent magnet 24 is spaced from the longitudinal axis of the shaft 12.
  • the printed circuit board 18 includes a cut-out 20 penetrated by the shaft 12.
  • the magnetic sensor 22 is attached upon the printed circuit board 18 and besides said cut-out 20.
  • a rotation of the shaft 12 changes the distance between the permanent magnet 14 and the magnetic sensor 22. Moreover, the rotation of the shaft 12 changes the orientation of the permanent magnet 14 relative to the magnetic sensor 22.
  • the signal generated by the magnetic sensor 22 depends on the torsion angle of the shaft 12.
  • the control element 10 allows a contactless detection of the torsion angle of the shaft 12. If the shaft 12 and/or its environment would be contaminated by cooking liquids, then the torsion angle of the shaft 12 is still detectable.
  • the control element 10 is provided for activating and deactivating the corresponding gas burner. Further, the control element 10 is provided for adjusting the gas flow to said corresponding gas burner. Moreover, the control element 10 may be provided for activating an electric ignition of the corresponding gas burner. Additionally, the control element 10 is provided for activating and deactivating a control lighting of the gas cooking hob.
  • the permanent magnet 14 is a passive component.
  • the magnetic sensor 22 is an active component, but arranged on the top side of the printed circuit board 18. A contamination of the shaft 12 and the permanent magnet 14 does not impair the function of the control element 10.
  • the shaft 12 penetrates a top panel 28 of a control device or of the gas cooking hob, wherein a rotary knob 26 is attached at the upper end of the shaft 12.
  • the rotary knob 26 and the top panel 28 are not shown in FIG 1 .
  • FIG 2 illustrates a schematic top view of the control element 10 for the gas cooking hob according to the preferred embodiment of the present invention.
  • the rotary knob 26 forms the top part of the control element 10 and is attached at the upper end of the shaft 12.
  • the rotary knob 26 is directly arranged above the top panel 28 of the control device or of the gas cooking hob.
  • the shaft 12 penetrates said top panel 28.
  • the control lighting is arranged beside the rotary knob 26.
  • the control lighting belongs to the corresponding gas burner of said rotary knob 26.
  • the control lighting includes a plurality of light emitting diodes (LED) arranged beneath the top panel 28.
  • the control lighting includes a temperature icon 30, a position icon 32, a bar symbol 34, an activation icon 36 and an ignition icon 38.
  • the position icon 32 indicates the position of the corresponding gas burner on the gas cooking hob.
  • the bar symbol 34 indicates the deactivation of the corresponding gas burner.
  • the activation icon 36 indicates an activated state of the corresponding gas burner.
  • the ignition icon 38 indicates the activation of the electric ignition.
  • the temperature icon 30, the position icon 32, the bar symbol 34, the activation icon 36 and the ignition icon 38 are activated.
  • the position icon 32, the activation icon 36 and the ignition icon 38 are deactivated.
  • the bar symbol 34 is deactivated after a predetermined time, e.g. one minute.
  • the temperature icon 30 is deactivated, when no heat occurs upon the corresponding gas burner any longer.
  • the gas flow to the corresponding gas burner is adjusted by the torsion angle of the shaft 12 either mechanically via a valve or electronically via the magnetic sensor 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Description

  • The present invention relates to a gas cooking hob comprising at least one control element according to the preamble of claim 1. In gas cooking hobs control signals are often indicated by a control lighting including light emitting diodes (LED). The control lighting is directly or indirectly controlled by a control element arranged on the gas cooking hob. Usually, the control element includes a moveable shaft with sliding contacts. However, if the sliding contacts are contaminated by cooking liquids, the function of the control element is impaired.
  • US 2012/0042745 discloses an operating control device for adjusting the power of a heating device. A rotary knob has an off position and a working position. In the working position the rotary knob is rotatable over a working angle. A counterforce increase with the rotation angle of the rotary knob. A magnetic element is arranged at the rotary knob. Magnetic sensors are arranged in the stationary part of the operating control device. The magnetic sensors are responsive to the magnetic elements and generate signals regarding to the rotational position of the rotary knob. However, the position detected by the magnetic sensors is not indicated by the operating control device.
  • It is an object of the present invention to provide a gas cooking hob with a control element, wherein the position detected by the magnetic sensors is indicated by said control element.
  • The object is achieved by the gas cooking hob with a control element according to claim 1.
  • According to the present invention:
    • the board is a printed circuit board,
    • the control element comprises a control lighting including at least one light emitting diode (LED),
    • the control lighting is controlled via the magnetic sensor,
    • one direction of rotation of the shaft corresponds with an activation of the corresponding gas burner, while a contrary direction of rotation of the shaft corresponds with a deactivation of the corresponding gas burner,
    • the control lighting is deactivated by rotating the shaft in the direction corresponding with the deactivation of the corresponding gas burner, and
    • at least one light emitting diode of the control lighting is deactivated after a predetermined time, when the corresponding gas burner has been deactivated by rotating the shaft.
  • The core of the present invention is the contactless detection of the position and/or orientation of the shaft by the the magnetic sensor, wherein the control lighting is controlled via said magnetic sensor. A contamination of the shaft and the permanent magnet does not impair the function of the control element. The position detected by the magnetic sensors is indicated by the control element.
  • Preferably, the moveable shaft is rotatable around its longitudinal axis. The moveable shaft is rotatable by the user.
  • Alternatively or additionally, the moveable shaft is slidable along its longitudinal axis.
  • For example, the magnetic sensor is a hall sensor.
  • Further, a gas flow to a corresponding gas burner may be controlled by a torsion angle of the shaft.
  • In this case, the gas flow may be controlled by a mechanic valve via the shaft. For example, the gas flow is controlled by the mechanical valve in the same time of the control lighting by the magnetic sensor.
  • Further, one direction of rotation of the shaft corresponds with an activation of the corresponding gas burner, while a contrary direction of rotation of the shaft corresponds with a deactivation of the corresponding gas burner.
  • The control lighting is activated by rotating the shaft in the direction corresponding with the activation of the corresponding gas burner.
  • In a similar way, the control lighting may be deactivated by rotating the shaft in the direction corresponding with the deactivation of the corresponding gas burner.
  • At least one light emitting diode of the control lighting is deactivated after a predetermined time, when the corresponding gas burner has been deactivated by rotating the shaft.
  • For example, the control lighting includes at least one light emitting diode for indicating a temperature icon.
  • Moreover, the at least one light emitting diode of the control lighting is arranged beneath a top panel of the gas cooking hob.
  • Novel and inventive features of the present invention are set forth in the appended claims.
  • The present invention will be described in further detail with reference to the drawings, in which
    • FIG 1
    illustrates a schematic sectional side view of a control element for a gas cooking hob according to a preferred embodiment of the present invention, and
    FIG 2
    illustrates a schematic top view of the control element for the gas cooking hob according to the preferred embodiment of the present invention.
  • FIG 1 illustrates a schematic sectional side view of a control element 10 for a gas cooking hob according to a preferred embodiment of the present invention.
  • The control element 10 comprises a shaft 12, a permanent magnet 14, a printed circuit board 18 and a magnetic sensor 22. Preferably, the magnetic sensor is a hall sensor 22. The shaft 12 is rotatable by the user in order to activate, deactivate and/or adjust a corresponding gas burner. In this example, the shaft 12 is arranged vertically. In general, the shaft 12 may have an arbitrary orientation. The shaft 12 is rotatably attached at the control element 10 of the gas cooking hob. The shaft 12 is rotatable around its longitudinal axis. Alternatively or additionally, the shaft 12 is slidable relative to the control element 10 of the gas cooking hob. For example, the shaft 12 is slidable along its longitudinal axis. The permanent magnet 24 is rigidly attached at the shaft 12. The permanent magnet 24 is spaced from the longitudinal axis of the shaft 12. The printed circuit board 18 includes a cut-out 20 penetrated by the shaft 12. The magnetic sensor 22 is attached upon the printed circuit board 18 and besides said cut-out 20.
  • A rotation of the shaft 12 changes the distance between the permanent magnet 14 and the magnetic sensor 22. Moreover, the rotation of the shaft 12 changes the orientation of the permanent magnet 14 relative to the magnetic sensor 22. The signal generated by the magnetic sensor 22 depends on the torsion angle of the shaft 12. The control element 10 allows a contactless detection of the torsion angle of the shaft 12. If the shaft 12 and/or its environment would be contaminated by cooking liquids, then the torsion angle of the shaft 12 is still detectable.
  • The control element 10 is provided for activating and deactivating the corresponding gas burner. Further, the control element 10 is provided for adjusting the gas flow to said corresponding gas burner. Moreover, the control element 10 may be provided for activating an electric ignition of the corresponding gas burner. Additionally, the control element 10 is provided for activating and deactivating a control lighting of the gas cooking hob.
  • There are no active components below the printed circuit board 18. The permanent magnet 14 is a passive component. The magnetic sensor 22 is an active component, but arranged on the top side of the printed circuit board 18. A contamination of the shaft 12 and the permanent magnet 14 does not impair the function of the control element 10.
  • Further, the shaft 12 penetrates a top panel 28 of a control device or of the gas cooking hob, wherein a rotary knob 26 is attached at the upper end of the shaft 12. The rotary knob 26 and the top panel 28 are not shown in FIG 1.
  • FIG 2 illustrates a schematic top view of the control element 10 for the gas cooking hob according to the preferred embodiment of the present invention.
  • The rotary knob 26 forms the top part of the control element 10 and is attached at the upper end of the shaft 12. The rotary knob 26 is directly arranged above the top panel 28 of the control device or of the gas cooking hob. The shaft 12 penetrates said top panel 28. The control lighting is arranged beside the rotary knob 26. The control lighting belongs to the corresponding gas burner of said rotary knob 26. The control lighting includes a plurality of light emitting diodes (LED) arranged beneath the top panel 28.
  • The control lighting includes a temperature icon 30, a position icon 32, a bar symbol 34, an activation icon 36 and an ignition icon 38. The position icon 32 indicates the position of the corresponding gas burner on the gas cooking hob. The bar symbol 34 indicates the deactivation of the corresponding gas burner. The activation icon 36 indicates an activated state of the corresponding gas burner. The ignition icon 38 indicates the activation of the electric ignition.
  • When the shaft 12 is rotated into an on-direction, preferably clockwise, then the temperature icon 30, the position icon 32, the bar symbol 34, the activation icon 36 and the ignition icon 38 are activated. When the shaft 12 is rotated into an off-direction, preferably counter-clockwise, then the position icon 32, the activation icon 36 and the ignition icon 38 are deactivated. The bar symbol 34 is deactivated after a predetermined time, e.g. one minute. The temperature icon 30 is deactivated, when no heat occurs upon the corresponding gas burner any longer.
  • The gas flow to the corresponding gas burner is adjusted by the torsion angle of the shaft 12 either mechanically via a valve or electronically via the magnetic sensor 22.
    • List of reference numerals
    • 10
    control element
    12
    shaft
    14
    permanent magnet
    18
    printed circuit board
    20
    cut-out
    22
    magnetic sensor, hall sensor
    26
    rotary knob
    28
    top panel
    30
    temperature icon
    32
    position icon
    34
    bar symbol
    36
    activation icon
    38
    ignition icon

Claims (10)

  1. A gas cooking hob comprising at least one control element (10), in particular a rotary control element (10), wherein:
    - the control element (10) comprises a moveable shaft (12),
    - the control element (10) comprises a permanent magnet (14) rigidly connected to the shaft (12),
    - the control element (10) comprises a stationary board (18),
    - the board (18) includes a cut-out (20) penetrated by the moveable shaft (12),
    - the control element (10) comprises a magnetic sensor (22) arranged on the board (18) and beside the cut-out (20),
    - the magnetic sensor (22) is responsive to the permanent magnet (14), so that the magnetic sensor (22) generates at least one control signal depending on the position and/or orientation of the shaft (12),
    characterised in that
    - the board (18) is a printed circuit board (18),
    - the control element (10) comprises a control lighting including at least one light emitting diode (LED),
    - the control lighting is controlled via the magnetic sensor (22),
    - one direction of rotation of the shaft (12) corresponds with an activation of the corresponding gas burner, while a contrary direction of rotation of the shaft (12) corresponds with a deactivation of the corresponding gas burner,
    - the control lighting is deactivated by rotating the shaft (12) in the direction corresponding with the deactivation of the corresponding gas burner, and
    - at least one light emitting diode (34) of the control lighting is deactivated after a predetermined time, when the corresponding gas burner has been deactivated by rotating the shaft (12).
  2. The gas cooking hob according to claim 1,
    characterised in that
    the moveable shaft (12) is rotatable around its longitudinal axis.
  3. The gas cooking hob according to claim 1 or 2,
    characterised in that
    the moveable shaft (12) is slidable along its longitudinal axis.
  4. The gas cooking hob according to any one of the preceding claims,
    characterised in that
    the magnetic sensor is a hall sensor (22).
  5. The gas cooking hob according to any one of the preceding claims,
    characterised in that
    a gas flow to a corresponding gas burner is controlled by a torsion angle of the shaft (12).
  6. The gas cooking hob according to claim 5,
    characterised in that
    the gas flow is controlled by a mechanic valve via the shaft (12) .
  7. The gas cooking hob according to claim 6,
    characterised in that
    the gas flow is controlled by the mechanical valve in the same time of the control lighting by the magnet sensor (22).
  8. The gas cooking hob according to any one of the preceding claims,
    characterised in that
    the control lighting is activated by rotating the shaft (12) in the direction corresponding with the activation of the corresponding gas burner.
  9. The gas cooking hob according to any one of the claims 5 to 8,
    characterised in that
    the control lighting includes at least one light emitting diode (30) for indicating a temperature icon (30).
  10. The gas cooking hob according to any one of the preceding claims,
    characterised in that
    the at least one light emitting diode of the control lighting is arranged beneath a top panel (28) of the gas cooking hob.
EP17168503.5A 2017-04-27 2017-04-27 Gas cooking hob comprising a control element Active EP3396254B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17168503.5A EP3396254B1 (en) 2017-04-27 2017-04-27 Gas cooking hob comprising a control element
ES17168503T ES2772715T3 (en) 2017-04-27 2017-04-27 Gas cooker stove comprising a control element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17168503.5A EP3396254B1 (en) 2017-04-27 2017-04-27 Gas cooking hob comprising a control element

Publications (2)

Publication Number Publication Date
EP3396254A1 EP3396254A1 (en) 2018-10-31
EP3396254B1 true EP3396254B1 (en) 2019-11-27

Family

ID=58638793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17168503.5A Active EP3396254B1 (en) 2017-04-27 2017-04-27 Gas cooking hob comprising a control element

Country Status (2)

Country Link
EP (1) EP3396254B1 (en)
ES (1) ES2772715T3 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10212954A1 (en) * 2002-03-19 2003-10-02 Ego Elektro Geraetebau Gmbh Control device for an electrical device
DE102004042861B3 (en) * 2004-09-04 2006-05-18 Moeller Gmbh Electrical switching device with display means
DE202005019978U1 (en) * 2005-10-12 2006-04-20 E.G.O. Elektro-Gerätebau GmbH Operating device for an electrical appliance
DE102010039415A1 (en) * 2010-08-17 2012-02-23 E.G.O. Elektro-Gerätebau GmbH Operating device and operating method
TR201201754A2 (en) * 2012-02-16 2012-08-22 SEMTECH ELEKTRONİK SANAYİ VE TİCARET LİMİTED ŞİRKETl Non-contact controllable light control circuit.
ITTO20120455A1 (en) * 2012-05-25 2013-11-26 Eltek Spa CONTROL DEVICE FOR GAS TAPS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2772715T3 (en) 2020-07-08
EP3396254A1 (en) 2018-10-31

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