WO2012028985A1 - Induktionsheizkörper - Google Patents
Induktionsheizkörper Download PDFInfo
- Publication number
- WO2012028985A1 WO2012028985A1 PCT/IB2011/053605 IB2011053605W WO2012028985A1 WO 2012028985 A1 WO2012028985 A1 WO 2012028985A1 IB 2011053605 W IB2011053605 W IB 2011053605W WO 2012028985 A1 WO2012028985 A1 WO 2012028985A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- unit
- induction heater
- coupling coil
- coupling
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
- H05B6/1254—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements using conductive pieces to direct the induced magnetic field
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1218—Cooking devices induction cooking plates or the like and devices to be used in combination with them with arrangements using lights for heating zone state indication
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- the invention is based on an induction heater according to the preamble of claim 1.
- an induction heater with an annular coupling coil is known, which is arranged coaxially around a circular disk-shaped heating coil and which is intended to provide a lighting unit inductively with energy.
- an induction heater with a coupling coil is known, which is applied in the form of a conductor track on a circuit board.
- the board is designed as a circular ring segment, so that a plurality of such boards can be arranged around a circular disk-shaped heating coil.
- Coupling coils are provided to provide a lighting unit inductively with energy.
- the object of the invention is, in particular, to provide a generic induction heater with an advantageously small footprint, in particular for use in matrix cooktops.
- the object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
- the invention is based on an induction heater with at least one heating coil and at least one coupling coil.
- the induction heater comprises at least one ferrite element about which the coupling coil is at least partially arranged.
- heating coil is to be understood in particular as a coil, preferably a circular-coil-shaped coil, which is intended to be provided by a coil high-frequency alternating current of a frequency of at least 10 kHz, in particular at least 20 kHz, advantageously at least 30 kHz, to flow through and to heat by means of induced alternating currents ferromagnetic cookware.
- provided is meant in particular specially programmed, designed and / or equipped.
- Coupling coil is to be understood in particular as an electrical conductor which is provided for receiving electromagnetic energy.
- the electrical conductor forms at least one conductor loop, preferably a plurality of conductor loops, and is wound to a coil in a particularly advantageous manner.
- a “conductor loop” is to be understood as meaning, in particular, an arrangement of an electrical conductor which forms a closed contour in at least one projection onto a plane.
- the electrical conductor is coated with an insulating layer, preferably an electrically insulating lacquer.
- an iron-containing component is to be understood, which preferably has a cubic body-centered crystal structure and is particularly advantageous ferromagnetic.
- the coupling coil is arranged on at least two sides of the ferrite element, by means of which an electrical consumer unit, in particular a lighting unit, can be loaded free of charge for a power supply unit
- an electrical consumer unit in particular a lighting unit
- the same power supply can be used in various induction hobs, wherein in such induction hobs, which have an additional electrical load unit, in particular a lighting unit, the energy required for this purpose can be provided inductively via a coupling coil.
- costs can advantageously be reduced.
- the coupling coil By arranging the coupling coil on the ferrite element, an advantageously high magnetic flux density in the ferrite element can be achieved. element are used for inductive energy transmission, whereby a small coupling coil may be sufficient to include a high magnetic flux. In this way, an induction heater can be provided with an advantageously small footprint.
- Heating coils can be achieved.
- a "matrix hob” in particular a hob, in which the heating units are arranged in a regular grid plate under a hob, and a heatable by means of heating units of the hob plate preferably at least 60%, in particular at least 70%, advantageously at least 80% and particularly advantageously at least 90% of a total area of the hob plate.
- the matrix hob comprises at least 10, in particular at least 20, advantageously at least 30 and particularly advantageously at least 40 heating units.
- the coupling coil is wound around the ferrite element.
- winding the coupling coil around the ferrite element it should be understood in particular that an insulated conductor of the coupling coil is guided completely around the ferrite element at least once and preferably several times.
- the ferrite element is designed in one piece with a ferromagnetic unit, which is intended to minimize stray magnetic fields of the heating coil in at least one operating state.
- magnetic stray fields of the heating coil should at in particular, magnetic fields in air and / or in an object different from the cookware and the ferromagnetic unit are understood to be at a distance from the heating coil which is greater than the distance of the heating coil from the cooking utensil , have a magnetic flux density of at least 1%, in particular of at least 5%, advantageously of at least 10% and particularly advantageously of at least 20% of the maximum magnetic flux density at the location of the heating coil.
- a "ferromagnetic unit” is to be understood as meaning, in particular, a ferromagnetic structural unit which is preferably formed from at least one ferrite element
- the ferromagnetic unit is intended to minimize magnetic stray fields of the heating coil in at least one operating state.
- the ferromagnetic unit is provided to minimize stray magnetic fields below the heating coil in at least one operating state.
- “below the heating coil” is meant, in particular, a side of the heating coil which faces away from a side of the heating coil intended for a cookware In this way, a particularly advantageous and space-saving position for the coupling coil can be provided.
- a coil surface of the heating coil and a coil surface of the coupling coil are arranged at an angle of at least 5 °.
- the coil surfaces are arranged at an angle of at least 25 °, advantageously of at least 50 ° and particularly advantageously of at least 75 °.
- the induction heater comprises at least one electrical load unit, which is supplied with energy by the coupling coil.
- An "electrical consumer unit” is to be understood here as meaning, in particular, a unit which converts an energy supplied by the coupling coil into electrical energy and / or into another form of energy / or generate heat and / or perform work and / or operate other electrical consumers.
- an energy provided by the coupling coil can be used to advantage, which can advantageously increase operating comfort, since the power required for this is supplied by the coupling coil can be on an enlargement a performance of a power supply can be omitted.
- a switch controlled by a control and / or regulating unit of an induction hob can be provided which is intended to interrupt a power supply to the electrical load unit as a function of at least one operating state of the induction hob.
- the electrical consumer unit comprises at least one lighting unit.
- a "lighting unit” is to be understood as meaning, in particular, an electrical consumer unit which is intended to emit visible light,
- the lighting unit is intended to illuminate parts of a cooktop panel and preferably a glass ceramic cooktop panel
- the lighting unit comprises at least one light source
- the illumination unit comprises a plurality of light-emitting means, in particular a plurality of light-emitting diodes, which are advantageously connected so that each current direction delivered by the coupling coil uses an emission of visible light
- the lighting unit is provided to indicate an outline of a heating coil by illumination ,
- the electrical load unit is electrically connected in series with the coupling coil. It is to be understood, in particular, that a closed circuit consisting of at least the coupling coil and at least the electrical consumer unit exists, whereby a power supply of the electrical consumer unit can be provided in a structurally particularly simple manner If the electrical consumer unit comprises a lighting unit, the light intensity of the light emitted by the lighting unit can be converted to a heating power of the lighting unit
- Heating coil can be closed, whereby an advantageous increased ease of use is possible.
- a control and / or regulation be controlled unit of an induction hob controlled switch in the circuit, which is intended to interrupt the circuit in response to at least one operating state of the induction cooktop.
- FIG. 1 shows an induction heater of an induction hob in a
- Fig. 2 shows the induction heater of FIG. 1 with a cookware in
- Fig. 1 shows an induction heater of an induction hob with a circular disk-shaped heating coil 10 in a plan view from below.
- the induction heater is disposed in a mounted state below a glass ceramic cooktop plate 25 of an induction cooktop.
- the heating coil 10 is fed via connecting lines 26 in a known manner with high-frequency alternating current from an inverter, not shown.
- the resulting high-frequency magnetic alternating field of the heating coil 10 induces eddy currents in the ferromagnetic cookware 30, which leads to its heating.
- the induction heater has a ferromagnetic unit 16 consisting of five identical ferrite elements 15a-e.
- the ferrite elements 15a-e are flat and elongated.
- the ferrite elements 15a-e are uniformly around a center of the heating coil 10 distributed and extend below the heating coil 10 spoke-shaped respectively from the center to an edge region of the heating coil 10th
- the induction heater further comprises a coupling coil 14 formed by an insulated conductor repeatedly and completely wound around a longitudinal direction of a ferrite member 15a.
- a coil surface 18 of the heating coil 10 and a coil surface 20 of the coupling coil 14 are perpendicular to each other.
- the coupling coil 14 is provided to inductively supply an electrical load unit 22 of the induction heater with energy.
- the electrical consumer unit 22 comprises a lighting unit 24 in the form of a schematically illustrated light-emitting diode.
- the electrical load unit 22 is electrically connected in series with the coupling coil 14 via connecting lines 28 shown schematically in FIG.
- the alternating magnetic field of the heating coil 10 in the coupling coil 14 induces an induction voltage, which leads, with the correct sign of the induction voltage, to a current flow in the connecting lines 28 and to a lighting of the lighting unit 24.
- the lighting unit 24 is a visual feedback on an operation of the induction heater.
- the lighting unit 24 may comprise further light emitting diodes, which may be arranged in a closed circle around the heating coil 10 around.
- the light-emitting diodes are advantageously arranged so that both current directions can be used to produce light.
- an annular diffuser may be used between the light emitting diodes and the glass ceramic cooktop panel 25 to create an impression of a diffused light source.
- LEDs of different colors can be used to achieve a desired optical effect achieve.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112011102862T DE112011102862A5 (de) | 2010-08-31 | 2011-08-15 | Induktionsheizkörper |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESP201031294 | 2010-08-31 | ||
| ES201031294 | 2010-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012028985A1 true WO2012028985A1 (de) | 2012-03-08 |
Family
ID=44651886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2011/053605 Ceased WO2012028985A1 (de) | 2010-08-31 | 2011-08-15 | Induktionsheizkörper |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE112011102862A5 (de) |
| WO (1) | WO2012028985A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023052060A1 (de) * | 2021-09-29 | 2023-04-06 | BSH Hausgeräte GmbH | Induktionsgargerätevorrichtung |
| WO2023052061A1 (de) * | 2021-09-29 | 2023-04-06 | BSH Hausgeräte GmbH | Induktionsgargerätevorrichtung |
| WO2023052062A1 (de) * | 2021-09-29 | 2023-04-06 | BSH Hausgeräte GmbH | Induktionsgargerätevorrichtung |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19546853A1 (de) | 1995-12-15 | 1997-06-19 | Aeg Hausgeraete Gmbh | Markierung für eine induktionsbeheizte Kochstelle |
| EP1317164B1 (de) | 2001-11-30 | 2007-03-21 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Vorrichtung zur Markierung einer Induktionsspule durch Beleuchtung |
| DE102008054904A1 (de) * | 2008-12-18 | 2010-06-24 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät zur induktiven Energieübertragung |
| EP2209351A1 (de) * | 2009-01-16 | 2010-07-21 | Whirpool Corporation | Verfahren zur Detektion der Brotgröße bei Induktionskochstellen und Induktionskochstelle zur Durchführung eines solchen Verfahrens |
| EP2209352A1 (de) * | 2009-01-16 | 2010-07-21 | Whirpool Corporation | Induktionsherderhitzer und Steuerverfahren dafür |
| DE102009027903A1 (de) * | 2009-07-21 | 2011-01-27 | BSH Bosch und Siemens Hausgeräte GmbH | Kochfeld, Niedrigenergieabnehmer und Verfahren zum Betreiben eines Kochfelds |
-
2011
- 2011-08-15 WO PCT/IB2011/053605 patent/WO2012028985A1/de not_active Ceased
- 2011-08-15 DE DE112011102862T patent/DE112011102862A5/de not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19546853A1 (de) | 1995-12-15 | 1997-06-19 | Aeg Hausgeraete Gmbh | Markierung für eine induktionsbeheizte Kochstelle |
| EP1317164B1 (de) | 2001-11-30 | 2007-03-21 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Vorrichtung zur Markierung einer Induktionsspule durch Beleuchtung |
| DE102008054904A1 (de) * | 2008-12-18 | 2010-06-24 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät zur induktiven Energieübertragung |
| EP2209351A1 (de) * | 2009-01-16 | 2010-07-21 | Whirpool Corporation | Verfahren zur Detektion der Brotgröße bei Induktionskochstellen und Induktionskochstelle zur Durchführung eines solchen Verfahrens |
| EP2209352A1 (de) * | 2009-01-16 | 2010-07-21 | Whirpool Corporation | Induktionsherderhitzer und Steuerverfahren dafür |
| DE102009027903A1 (de) * | 2009-07-21 | 2011-01-27 | BSH Bosch und Siemens Hausgeräte GmbH | Kochfeld, Niedrigenergieabnehmer und Verfahren zum Betreiben eines Kochfelds |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023052060A1 (de) * | 2021-09-29 | 2023-04-06 | BSH Hausgeräte GmbH | Induktionsgargerätevorrichtung |
| WO2023052061A1 (de) * | 2021-09-29 | 2023-04-06 | BSH Hausgeräte GmbH | Induktionsgargerätevorrichtung |
| WO2023052062A1 (de) * | 2021-09-29 | 2023-04-06 | BSH Hausgeräte GmbH | Induktionsgargerätevorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112011102862A5 (de) | 2013-08-14 |
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