EP1317164A2 - Device for marking an induction coil through lightning - Google Patents

Device for marking an induction coil through lightning Download PDF

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Publication number
EP1317164A2
EP1317164A2 EP02025914A EP02025914A EP1317164A2 EP 1317164 A2 EP1317164 A2 EP 1317164A2 EP 02025914 A EP02025914 A EP 02025914A EP 02025914 A EP02025914 A EP 02025914A EP 1317164 A2 EP1317164 A2 EP 1317164A2
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EP
European Patent Office
Prior art keywords
induction coil
carrier
coil
receiving coil
illuminant
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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.)
Granted
Application number
EP02025914A
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German (de)
French (fr)
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EP1317164A3 (en
EP1317164B1 (en
Inventor
Jörg Bögel
Michael Stöffler
Wilfried Schilling
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.)
EGO Elektro Geratebau GmbH
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EGO Elektro Geratebau GmbH
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Publication of EP1317164A2 publication Critical patent/EP1317164A2/en
Publication of EP1317164A3 publication Critical patent/EP1317164A3/en
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Publication of EP1317164B1 publication Critical patent/EP1317164B1/en
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    • 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

Definitions

  • the invention relates to a device for marking the operation and / or the position of an induction coil of an inductive hob by lighting or illuminated marking according to the preamble of Claim 1 and an inductive heating device according to the preamble of claim 12.
  • Induction coils of an inductive hob can be placed under a glass ceramic plate be arranged. A corresponding one is placed on the glass ceramic plate Cooking vessel placed on. Located below this point the induction coil and transfers energy into the bottom of the cooking vessel for heating the same.
  • radiant heaters it is here in many cases desired, by an optical display in the area of the heating operation or to signal the position of the heater. It would be conceivable Arrange lamps underneath an induction coil and by means of laterally pulled out light guide the induction coil by lighting to mark. Here, however, the electrical connection is the Illuminants complex. Due to the arrangement below the induction coil the overall height is increased, which is considered disadvantageous.
  • the invention has for its object a device mentioned as well as to create an inductive heating device with which the Disadvantages of the prior art can be avoided, in particular a luminous marking of an induction coil, its operation or its Position is as simple and reliable as possible.
  • an aforementioned device has a carrier, which has or carries at least one electric lamp.
  • the device has a receiving coil which is magnetic Field of the induction coil can be placed and a transformer Energy transfer from the induction coil to the receiving coil allows.
  • the receiving coil is in turn with the Illuminant connected and thus feeds it with energy from the induction coil.
  • LEDs are particularly advantageously used, they are temperature-resistant up to at least 100 ° C. In this way is an operation under a ceramic hob in most cases trouble-free possible without problems with overtemperature. Through alternative Using glow lamps can cause problems with overheating be completely avoided.
  • a plurality of lamps can be provided for each receiving coil, wherein the receiving coil is advantageously dimensioned accordingly.
  • the lamps can be LED. This has the advantage that they are polarized opposite each other in approximately the same number can be connected to the receiving coil. This will with the LED both positive and negative phases of the in the receiving coil generated voltage used.
  • a circuit board can be used as a carrier for this. This opens up the possibility of making the receiver coil special in terms of production technology advantageous due to conductor tracks applied to the circuit board train. Since there are no large currents flowing in the receiving coil, these interconnects or the turns of the receiving coil can be very run thin and are relatively close together. Advantageous can the receiving coil or its turns in the outer area of the wearer or run around, so that in the middle there is space for the Illuminant or other devices remains.
  • the receiving coil can run spirally on the carrier. To increase the number of turns for each carrier, the receiving coil can run on both sides of the carrier, for example, in a corresponding manner. The the two parts can then be connected.
  • the brightness of the illuminant depends approximately on the power to get the induction coil. This way is an additional one Information about the operating state of the induction coil is possible.
  • one can largely Power independent lighting can be achieved by using voltage limiting means for which illuminants are provided. About fluctuations in brightness can minimize the LED series resistors upstream become. They are preferably arranged on the same carrier like the lamps connected to them. Particularly preferred they are arranged close to the illuminant.
  • an induction coil as usual, is flat and round the carrier may have a substantially circular sector shape.
  • the radius of a circular sector sector beam can be chosen so that the carrier has the shape of the induction coil runs accordingly and is at a certain distance from it. This distance can range from a few millimeters to a few centimeters lie, for example 10mm to 20mm. In particular is the distance between the induction coil itself and Understanding the receiving coil.
  • an illuminant itself to create an induction coil to mark what is usually an approximately point lighting results.
  • at least a light distribution means can be assigned, by means of which it is possible, a larger or elongated or even distributed light appearance cause.
  • Such light distribution means are from others Areas of application known, for example as light rails.
  • the Light distribution means can be arranged over one or more illuminants become. They preferably consist of a transparent one Plastic. Your course can generally be the desired course of a Lighting. In particular, their course roughly corresponds the shape of the induction coil, so forms one for example surrounding luminous annulus.
  • Thermal insulation may be provided, at least in the area the lamp itself is translucent. Such insulation can for example by means of a holder or spacer with the carrier be connected. In this way, they can form a structural unit.
  • the surface of the insulation should be at least the device cover upwards or protrude even better. So it is possible in the case of particularly strongly heated cooking vessel bases that are moved laterally are and form above the device or the illuminants, overheating of the lamps or the device or the receiving coil to avoid.
  • the thermal insulation of the device screen towards the cover or the hob.
  • Insulation can be, for example, a glass or a temperature-resistant one Plastic are used, which with a corresponding coating should be provided. IR reflectors are particularly suitable for this Coatings.
  • a device according to the invention is particularly advantageous independently on the construction of an induction coil. That way it is possible to retrofit any induction coil or any induction hob.
  • an inductive one Heating device with the features of claim 12 solved.
  • an inductive heating device according to the invention which in particular an induction hob can be at least close to the induction coil one of the aforementioned devices or carriers arranged.
  • an induction coil essentially of illuminants on one or more supports surround.
  • the illuminant is in the essentially the same lateral distance, for example a few Centimeters to the induction coil.
  • at least four lamps can be provided, but advantageously much more. So a punctiform or, by means of the aforementioned Light distribution means, band-shaped luminous image created around the induction coil become.
  • the supports of the devices are circular ring sectors, for example Third circular ring sectors, assembly of the same is easily possible.
  • this may look like the induction coil, especially together with several induction coils, on one Basic bracket is attached and at least one carrier on the same Basic bracket is attached.
  • An attachment can for example by gluing, in particular by means of double-sided foam adhesive tapes, respectively.
  • FIG. 1 shows a possible embodiment of a lighting device 11 shown. This is in the form of an annular sector, in this case as a third circle.
  • the lighting device 11 is at a short distance arranged on the outer edge of an induction coil 12. As shown, 11 more are connected to the left and right of the lighting device, preferably identically designed lighting devices so as to form a full circle around the induction coil 12.
  • the lighting device 11 consists of a printed circuit board 14. On this the coil 15 is applied, in the form that rotating Coil turns 16 are formed by corresponding conductor tracks become. For the sake of clarity, a coil 15 is shown with two turns 16. In practice, more turns are preferred, for example seven or eight. As in the upper left area of the circuit board 14, an overlap of the web is necessary. This is shown schematically by bridging. In practice this can be achieved by a separate component to be soldered on.
  • circuit board 14 carry a coil 15 with turns 16 and through an electrical connection running through the circuit board 14 are connected. In this case, the problem of such overlaps be avoided.
  • By connecting the two in series Coils can increase the induced voltage or the number of turns can be reduced per circuit board surface.
  • the induction coils 12 are on an aluminum sheet carrier applied, for example glued.
  • the lighting device 11 can also be mounted on the same aluminum sheet carrier be attached.
  • the LEDs 20 are connected to the coil 15 by means of connecting lines 18. These connections 18 are also as conductor tracks on the circuit board 14 trained. The LED 20 can accordingly on the circuit board 14 are soldered. It is possible to use so-called SMD components or To use LEDs that are applied by pick and place machines can.
  • the LEDs 20 are parallel to each other at the Coil 15 connected. Are on the front and back of the circuit board 14 turns 16 are present and thus actually two coils 15 formed, these coils 15 are advantageously connected in series.
  • FIG. 2 This can also be seen in FIG. 2.
  • the series resistors 22 are advantageously as close as possible to the LED 20 arranged on the circuit board 14. This is particularly the case with SMD components can be used because they are very small.
  • the Series resistors also have the great advantage of being one Overload protection is given. It is also possible to use other means to be provided for voltage limitation.
  • the LEDs 20 can alternate be connected poled. This means that both positive and negative as well as negative half-waves induced in the coils 15 AC voltage can be used.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • General Induction Heating (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

The arrangement has a bearer (14) with at least one electrical light source (20) and a transformer-type receiver coil (15) for placement in the magnetic field of the induction coil (12), whereby the receiver coil is connected to the light source. Several light sources, preferably LEDs, can be used per receiver coil and connected to the receiver coil with alternating polarity. <??>AN Independent claim is also included for the following: an inductive heater with an inventive arrangement.

Description

Anwendungsgebiet und Stand der TechnikField of application and state of the art

Die Erfindung betrifft eine Vorrichtung zur Markierung des Betriebs und/oder der Position einer Induktionsspule eines induktiven Kochfelds durch Beleuchtung oder Leuchtmarkierung gemäß dem Oberbegriff des Anspruchs 1 sowie eine induktive Heizeinrichtung gemäß dem Oberbegriff des Anspruchs 12.The invention relates to a device for marking the operation and / or the position of an induction coil of an inductive hob by lighting or illuminated marking according to the preamble of Claim 1 and an inductive heating device according to the preamble of claim 12.

Induktionsspulen eines induktiven Kochfeldes können unter einer Glaskeramikplatte angeordnet sein. Auf die Glaskeramikplatte wird ein entsprechendes Kochgefäß aufgesetzt. Unterhalb dieser Stelle befindet sich die Induktionsspule und überträgt Energie in den Boden des Kochgefäßes zur Erwärmung desselben.Induction coils of an inductive hob can be placed under a glass ceramic plate be arranged. A corresponding one is placed on the glass ceramic plate Cooking vessel placed on. Located below this point the induction coil and transfers energy into the bottom of the cooking vessel for heating the same.

Wie beispielsweise bei Strahlungsheizkörpern ist es hier in vielen Fällen erwünscht, durch eine optische Anzeige im Bereich der Heizung den Betrieb oder auch die Position der Heizung zu signalisieren. Es wäre denkbar, unterhalb einer Induktionsspule Leuchtmittel anzuordnen und mittels seitlich hervorgezogener Lichtleiter die Induktionsspule durch Beleuchtung zu markieren. Hierbei ist jedoch der elektrische Anschluss der Leuchtmittel aufwändig. Durch die Anordnung unterhalb der Induktionsspule wird die Bauhöhe vergrößert, was als nachteilig angesehen wird.As with, for example, radiant heaters, it is here in many cases desired, by an optical display in the area of the heating operation or to signal the position of the heater. It would be conceivable Arrange lamps underneath an induction coil and by means of laterally pulled out light guide the induction coil by lighting to mark. Here, however, the electrical connection is the Illuminants complex. Due to the arrangement below the induction coil the overall height is increased, which is considered disadvantageous.

Aufgabe und LösungTask and solution

Der Erfindung liegt die Aufgabe zugrunde, eine eingangs genannte Vorrichtung sowie eine induktive Heizeinrichtung zu schaffen, mit der die Nachteile des Standes der Technik vermieden werden, insbesondere eine Leuchtmarkierung einer Induktionsspule, ihres Betriebs oder ihrer Position möglichst einfach und funktionssicher möglich ist.The invention has for its object a device mentioned as well as to create an inductive heating device with which the Disadvantages of the prior art can be avoided, in particular a luminous marking of an induction coil, its operation or its Position is as simple and reliable as possible.

Gelöst wird diese Aufgabe durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 sowie eine induktive Heizeinrichtung mit den Merkmalen des Anspruchs 12. Vorteilhafte sowie bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche und werden im folgenden näher erläutert. Der Wortlaut der Ansprüche wird durch ausdrückliche Bezugnahme zum Inhalt der Beschreibung gemacht.This problem is solved by a device with the features of claim 1 and an inductive heating device with the features of claim 12. Advantageous and preferred embodiments the invention are the subject of further claims and are in following explained in more detail. The wording of the claims is by express Reference made to the content of the description.

Erfindungsgemäß weist eine vorgenannte Vorrichtung einen Träger auf, der wenigstens ein elektrisches Leuchtmittel aufweist oder trägt. Des weiteren weist die Vorrichtung eine Empfangsspule auf, die im magnetischen Feld der Induktionsspule platziert werden kann und eine transformatorische Energieübertragung von der Induktionsspule in die Empfangsspule ermöglicht. Die Empfangsspule wiederum ist mit dem Leuchtmittel verbunden und speist dieses somit mit Energie aus der Induktionsspule.According to the invention, an aforementioned device has a carrier, which has or carries at least one electric lamp. Of furthermore, the device has a receiving coil which is magnetic Field of the induction coil can be placed and a transformer Energy transfer from the induction coil to the receiving coil allows. The receiving coil is in turn with the Illuminant connected and thus feeds it with energy from the induction coil.

Dies weist den großen Vorteil auf, dass keine elektrischen Anschlüsse zwischen einer erfindungsgemäßen Vorrichtung und einer Stromversorgung, an die beispielsweise auch die Induktionsspule selber angeschlossen ist, notwendig sind. Auf diese Weise erfolgt eine Energieübertragung ohne direkten Anschluss oder Kontakt. Mit einer Induktionsspule können auch mehrere Träger bzw. Empfangsspulen um sie herum versorgt werden. Auf diese Weise kann eine erfindungsgemäße Vorrichtung als relativ autarke Funktions- und Baueinheit gefertigt und montiert werden. Die Montage besteht dabei im wesentlichen aus der Befestigung.This has the great advantage that there are no electrical connections between a device according to the invention and a power supply, to which, for example, the induction coil itself is connected is necessary. In this way, energy is transferred without direct connection or contact. With an induction coil can also supply multiple carriers or receiving coils around them become. In this way, a device according to the invention are manufactured and assembled as a relatively self-sufficient functional and structural unit. The assembly consists essentially of the attachment.

Um möglichst wenig Energie zu verbrauchen werden als Leuchtmittel vorteilhaft LED verwendet. Besonders vorteilhaft werden LED verwendet, die temperaturfest sind bis zu mindestens 100°C. Auf diese Weise ist ein Betrieb unter einem Glaskeramikkochfeld in den meisten Fällen störungsfrei möglich ohne Probleme mit Übertemperaturen. Durch alternative Verwendung von Glimmlampen können Probleme mit Übertemperaturen völlig vermieden werden.To use as little energy as possible as illuminants advantageously uses LED. LEDs are particularly advantageously used, they are temperature-resistant up to at least 100 ° C. In this way is an operation under a ceramic hob in most cases trouble-free possible without problems with overtemperature. Through alternative Using glow lamps can cause problems with overheating be completely avoided.

Pro Empfangsspule können mehrere Leuchtmittel vorgesehen sein, wobei die Empfangsspule vorteilhaft jeweils entsprechend dimensioniert ist. Wie angesprochen, können die Leuchtmittel LED sein. Dies hat den Vorteil, dass sie in jeweils ungefähr gleicher Anzahl entgegengesetzt gepolt an die Empfangsspule angeschlossen werden können. Dadurch werden bei den LED sowohl positive als auch negative Phasen der in die Empfangsspule erzeugten Spannung genutzt.A plurality of lamps can be provided for each receiving coil, wherein the receiving coil is advantageously dimensioned accordingly. As mentioned, the lamps can be LED. This has the advantage that they are polarized opposite each other in approximately the same number can be connected to the receiving coil. This will with the LED both positive and negative phases of the in the receiving coil generated voltage used.

Bei einer bevorzugten Ausgestaltung der Erfindung ist die Empfangsspule auf dem Träger selber zusammen mit den Leuchtmitteln angeordnet. Hierzu kann als Träger eine Leiterplatte verwendet werden. Dies eröffnet die Möglichkeit, die Empfangsspule fertigungstechnisch besonders vorteilhaft durch auf die Leiterplatte aufgebrachte Leiterbahnen auszubilden. Da in der Empfangsspule keine großen Ströme fließen, können diese Leitbahnen bzw. die Windungen der Empfangsspule sehr dünn ausgeführt werden und somit relativ eng beieinander liegen. Vorteilhaft kann die Empfangsspule bzw. deren Windungen im äußeren Bereich des Trägers um- oder verlaufen, so dass in der Mitte Platz für die Leuchtmittel oder weitere Vorrichtungen bleibt. Die Empfangsspule kann spiralförmig auf dem Träger verlaufen. Zur Erhöhung der Windungszahl pro Träger kann die Empfangsspule auf beiden Seiten des Trägers verlaufen, beispielsweise auf jeweils entsprechende Art und Weise. Die beiden Teile können dann verbunden sein.In a preferred embodiment of the invention, the receiving coil arranged on the carrier itself together with the lamps. A circuit board can be used as a carrier for this. This opens up the possibility of making the receiver coil special in terms of production technology advantageous due to conductor tracks applied to the circuit board train. Since there are no large currents flowing in the receiving coil, these interconnects or the turns of the receiving coil can be very run thin and are relatively close together. Advantageous can the receiving coil or its turns in the outer area of the wearer or run around, so that in the middle there is space for the Illuminant or other devices remains. The receiving coil can run spirally on the carrier. To increase the number of turns for each carrier, the receiving coil can run on both sides of the carrier, for example, in a corresponding manner. The the two parts can then be connected.

Bei direktem Anschluss der Leuchtmittel an die Empfangsspule ist es möglich, die Helligkeit der Leuchtmittel in etwa abhängig von der Leistung der Induktionsspule zu erhalten. Auf diese Weise ist eine zusätzliche Information über den Betriebszustand der Induktionsspule möglich.It is when the lamps are directly connected to the receiver coil possible, the brightness of the illuminant depends approximately on the power to get the induction coil. This way is an additional one Information about the operating state of the induction coil is possible.

In einer weiteren Ausgestaltung der Erfindung kann eine weitgehend leistungsunabhängige Beleuchtung erzielt werden, indem Spannungsbegrenzungsmittel für die Leuchtmittel vorgesehen sind. Um Helligkeitsschwankungen zu minimieren können den LED Vorwiderstände vorgeschaltet werden. Bevorzugt sind sie auf demselben Träger angeordnet wie die jeweils mit ihnen verbundenen Leuchtmittel. Besonders bevorzugt sind sie nahe der Leuchtmittel angeordnet.In a further embodiment of the invention, one can largely Power independent lighting can be achieved by using voltage limiting means for which illuminants are provided. About fluctuations in brightness can minimize the LED series resistors upstream become. They are preferably arranged on the same carrier like the lamps connected to them. Particularly preferred they are arranged close to the illuminant.

Für den Fall, dass eine Induktionsspule, wie üblich, flach und rund ausgebildet ist, kann der Träger im wesentlichen Kreisringsektorform aufweisen. Dies bedeutet, dass ein oder mehrere Träger zusammen die Induktionsspule umgeben können. Gemäß einer Möglichkeit kann sich ein solcher Kreisringsektor über einen Winkelbereich von ca. 120° erstrecken. Somit ist es mit drei solchen Trägern möglich, die Induktionsspule zu umranden. Der Radius eines Trägers mit Kreisringsektorform kann so gewählt sein, dass der Träger der Form der Induktionsspule entsprechend verläuft und einen bestimmten Abstand dazu aufweist. Dieser Abstand kann im Bereich weniger Millimeter bis zu wenigen Zentimetern liegen, beispielsweise 10mm bis 20mm betragen. Insbesondere ist hier unter Abstand der Abstand zwischen Induktionsspule selber und Empfangsspule zu verstehen.In the event that an induction coil, as usual, is flat and round the carrier may have a substantially circular sector shape. This means that one or more carriers together make up the Can surround induction coil. According to one way, you can such a circular ring sector over an angular range of approximately 120 ° extend. It is therefore possible with three such carriers, the induction coil to edge. The radius of a circular sector sector beam can be chosen so that the carrier has the shape of the induction coil runs accordingly and is at a certain distance from it. This distance can range from a few millimeters to a few centimeters lie, for example 10mm to 20mm. In particular is the distance between the induction coil itself and Understanding the receiving coil.

Einerseits ist es möglich, durch Leuchtmittel selber eine Induktionsspule zu markieren, was in der Regel eine in etwa punktförmige Beleuchtung ergibt. In weiterer Ausgestaltung der Erfindung können dem wenigstens einen Leuchtmittel Lichtverteilmittel zugeordnet sein, mittels derer es möglich ist, eine größere bzw. länglich oder sogar flächig verteilte Lichterscheinung hervorzurufen. Solche Lichtverteilmittel sind aus anderen Anwendungsgebieten bekannt, beispielsweise als Lichtschienen. Die Lichtverteilmittel können über einen oder mehreren Leuchtmitteln angeordnet werden. Bevorzugt bestehen sie aus einem durchsichtigen Kunststoff. Ihr Verlauf kann allgemein dem gewünschten Verlauf einer Beleuchtung entsprechen. Insbesondere entspricht ihr Verlauf in etwa der Form der Induktionsspule, bildet also beispielsweise einen diese umgebenden leuchtenden Kreisring.On the one hand, it is possible to use an illuminant itself to create an induction coil to mark what is usually an approximately point lighting results. In a further embodiment of the invention, at least a light distribution means can be assigned, by means of which it is possible, a larger or elongated or even distributed light appearance cause. Such light distribution means are from others Areas of application known, for example as light rails. The Light distribution means can be arranged over one or more illuminants become. They preferably consist of a transparent one Plastic. Your course can generally be the desired course of a Lighting. In particular, their course roughly corresponds the shape of the induction coil, so forms one for example surrounding luminous annulus.

Zur Vermeidung thermischer Probleme kann oberhalb der Vorrichtung eine thermische Dämmung vorgesehen sein, die zumindest im Bereich der Leuchtmittel selber lichtdurchlässig ist. Eine solche Dämmung kann beispielsweise mittels eines Halters oder Abstandshalters mit dem Träger verbunden sein. Auf diese Weise können sie eine Baueinheit bilden. Die Dämmung sollte von der Fläche her mindestens die Vorrichtung nach oben hin abdecken oder noch besser überragen. So ist es möglich, bei besonders stark aufgeheizten Kochgefäßböden, die seitlich verschoben sind und sich oberhalb der Vorrichtung bzw. der Leuchtmittel bilden, eine Überhitzung der Leuchtmittel oder der Vorrichtung oder der Empfangsspule zu vermeiden. Somit soll die thermische Dämmung die Vorrichtung zu der Abdeckung bzw. dem Kochfeld hin abschirmen. Als Dämmung kann beispielsweise ein Glas oder ein temperaturfester Kunststoff verwendet werden, welche mit einer entsprechenden Beschichtung versehen sein sollten. Hierzu eignen sich insbesondere IRreflektierende Beschichtungen.To avoid thermal problems can be above the device Thermal insulation may be provided, at least in the area the lamp itself is translucent. Such insulation can for example by means of a holder or spacer with the carrier be connected. In this way, they can form a structural unit. The surface of the insulation should be at least the device cover upwards or protrude even better. So it is possible in the case of particularly strongly heated cooking vessel bases that are moved laterally are and form above the device or the illuminants, overheating of the lamps or the device or the receiving coil to avoid. Thus, the thermal insulation of the device screen towards the cover or the hob. As Insulation can be, for example, a glass or a temperature-resistant one Plastic are used, which with a corresponding coating should be provided. IR reflectors are particularly suitable for this Coatings.

Besonders vorteilhaft ist eine erfindungsgemäße Vorrichtung unabhängig von der Bauweise einer Induktionsspule. Auf diese Weise ist es möglich, eine Vorrichtung zur Nachrüstung einer beliebigen Induktionsspule oder beliebiger Induktionskochstelle auszubilden.A device according to the invention is particularly advantageous independently on the construction of an induction coil. That way it is possible to retrofit any induction coil or any induction hob.

Des weiteren wird die zuvor genannte Aufgabe durch eine induktive Heizeinrichtung mit den Merkmalen des Anspruchs 12 gelöst. Bei einer solchen erfindungsgemäßen induktiven Heizeinrichtung, die insbesondere ein Induktionskochfeld sein kann, ist nahe der Induktionsspule mindestens eine der vorgenannten Vorrichtungen oder Träger angeordnet.Furthermore, the aforementioned task is accomplished by an inductive one Heating device with the features of claim 12 solved. At a such inductive heating device according to the invention, which in particular an induction hob can be at least close to the induction coil one of the aforementioned devices or carriers arranged.

Bei einer bevorzugten Ausgestaltung der Erfindung ist eine Induktionsspule im wesentlichen von Leuchtmitteln auf einem oder mehreren Trägern umgeben. Hier ist es von Vorteil, wenn die Leuchtmittel einen im wesentlichen gleichen seitlichen Abstand, beispielsweise einige wenige Zentimeter, zu der Induktionsspule aufweisen. Zur Markierung und insbesondere zur Hervorhebung der runden Form der Induktionsspule sollten mindestens vier Leuchtmittel vorgesehen sein, vorteilhaft jedoch weitaus mehr. So kann ein punktförmiges oder, mittels vorgenannter Lichtverteilmittel, bandförmiges Leuchtbild um die Induktionsspule geschaffen werden.In a preferred embodiment of the invention is an induction coil essentially of illuminants on one or more supports surround. Here it is advantageous if the illuminant is in the essentially the same lateral distance, for example a few Centimeters to the induction coil. For marking and in particular to emphasize the round shape of the induction coil should at least four lamps can be provided, but advantageously much more. So a punctiform or, by means of the aforementioned Light distribution means, band-shaped luminous image created around the induction coil become.

Wenn die Träger der Vorrichtungen Kreisringsektoren sind, beispielsweise Drittel-Kreisringsektoren, ist eine Montage derselben leicht möglich. Dies kann beispielsweise so aussehen, dass die Induktionsspule, insbesondere auch mit mehreren Induktionsspulen zusammen, an einer Grundhalterung befestigt ist und wenigstens ein Träger an derselben Grundhalterung befestigt ist. Eine Befestigung kann beispielsweise durch Kleben, insbesondere mittels doppelseitiger Schaumstoffklebebänder, erfolgen.If the supports of the devices are circular ring sectors, for example Third circular ring sectors, assembly of the same is easily possible. For example, this may look like the induction coil, especially together with several induction coils, on one Basic bracket is attached and at least one carrier on the same Basic bracket is attached. An attachment can for example by gluing, in particular by means of double-sided foam adhesive tapes, respectively.

Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Die Unterteilung der Anmeldung in Zwischen-Überschriften und einzelne Abschnitte beschränkt die unter diesen gemachten Aussagen nicht in ihrer Allgemeingültigkeit.These and other features go beyond the claims from the description and the drawings, the individual Features individually or in groups in the form of sub-combinations in one embodiment of the invention and others Areas to be realized and advantageous as well as protectable Can represent designs for which protection is claimed here becomes. The division of the application into sub-headings and individual sections restrict the statements made under these not in their generality.

Kurzbeschreibung der ZeichnungenBrief description of the drawings

Ausführungsbeispiele der Erfindung sind in den Zeichnungen schematisch dargestellt und werden im folgenden näher erläutert. In den Figuren zeigen:

Fig. 1
eine Draufsicht auf eine erfindungsgemäße Beleuchtungsvorrichtung auf einer Kreissegment-Leiterplatte und
Fig. 2
ein elektrisches Schaltbild einer solchen.
Embodiments of the invention are shown schematically in the drawings and are explained in more detail below. The figures show:
Fig. 1
a plan view of an inventive lighting device on a circular segment circuit board and
Fig. 2
an electrical circuit diagram of such.

Detaillierte Beschreibung der AusführungsbeispieleDetailed description of the exemplary embodiments

In Fig. 1 ist eine mögliche Ausführung einer Beleuchtungsvorrichtung 11 dargestellt. Diese ist kreisringsektorförmig ausgebildet, in diesem Fall als Drittelkreis. Die Beleuchtungsvorrichtung 11 ist mit geringem Abstand am Außenrand einer Induktionsspule 12 angeordnet. Wie dargestellt, schließen links und rechts an die Beleuchtungsvorrichtung 11 weitere, vorzugsweise identisch ausgebildete, Beleuchtungsvorrichtungen an, um so einen vollen Kreis um die Induktionsspule 12 zu bilden. 1 shows a possible embodiment of a lighting device 11 shown. This is in the form of an annular sector, in this case as a third circle. The lighting device 11 is at a short distance arranged on the outer edge of an induction coil 12. As shown, 11 more are connected to the left and right of the lighting device, preferably identically designed lighting devices so as to form a full circle around the induction coil 12.

Die Beleuchtungsvorrichtung 11 besteht dabei aus einer Leiterplatte 14. Auf dieser ist die Spule 15 aufgebracht, und zwar in der Form, dass umlaufende Spulenwindungen 16 durch entsprechende Leiterbahnen gebildet werden. Dargestellt ist der Übersichtlichkeit halber eine Spule 15 mit zwei Windungen 16. In der Praxis werden mehr Windungen bevorzugt, beispielsweise sieben oder acht. Wie im linken oberen Bereich der Leiterplatte 14 dargestellt, ist eine Überschneidung der Bahn notwendig. Diese ist schematisch dargestellt durch eine Überbrückung. In der Praxis kann dies durch ein aufzulötendes separates Bauteil erreicht werden.The lighting device 11 consists of a printed circuit board 14. On this the coil 15 is applied, in the form that rotating Coil turns 16 are formed by corresponding conductor tracks become. For the sake of clarity, a coil 15 is shown with two turns 16. In practice, more turns are preferred, for example seven or eight. As in the upper left area of the circuit board 14, an overlap of the web is necessary. This is shown schematically by bridging. In practice this can be achieved by a separate component to be soldered on.

Besonders vorteilhaft ist eine Möglichkeit, nach der beide Oberflächen der Leiterplatte 14 eine Spule 15 mit Windungen 16 tragen und durch eine durch die Leiterplatte 14 hindurch verlaufende elektrische Verbindung verbunden sind. In diesem Fall kann das Problem von solchen Überschneidungen vermieden werden. Durch Reihenschaltung der beiden Spulen kann die induzierte Spannung erhöht werden bzw. die Windungszahl pro Leiterplattenoberfläche reduziert werden.A possibility according to which both surfaces are particularly advantageous the circuit board 14 carry a coil 15 with turns 16 and through an electrical connection running through the circuit board 14 are connected. In this case, the problem of such overlaps be avoided. By connecting the two in series Coils can increase the induced voltage or the number of turns can be reduced per circuit board surface.

In der Regel werden die Induktionsspulen 12 auf einem Aluminiumblechträger aufgebracht, beispielsweise festgeklebt. Auf dieselbe Art und Weise kann auch die Beleuchtungsvorrichtung 11 auf demselben Aluminiumblechträger befestigt werden.As a rule, the induction coils 12 are on an aluminum sheet carrier applied, for example glued. In the same way and The lighting device 11 can also be mounted on the same aluminum sheet carrier be attached.

Mittels Anschlussleitungen 18 sind die LED 20 mit der Spule 15 verbunden. Auch diese Anschlüsse 18 sind als Leiterbahnen auf der Leiterplatte 14 ausgebildet. Die LED 20 können entsprechend auf der Leiterplatte 14 festgelötet werden. Es ist möglich, sogenannte SMD-Bauteile bzw. - LED zu verwenden, die von Bestückungsautomaten aufgebracht werden können. The LEDs 20 are connected to the coil 15 by means of connecting lines 18. These connections 18 are also as conductor tracks on the circuit board 14 trained. The LED 20 can accordingly on the circuit board 14 are soldered. It is possible to use so-called SMD components or To use LEDs that are applied by pick and place machines can.

Wie in Fig. 1 zu erkennen ist, sind die LED 20 parallel zueinander an die Spule 15 angeschlossen. Sind auf der Vorder- und Rückseite der Leiterplatte 14 Windungen 16 vorhanden und somit eigentlich zwei Spulen 15 ausgebildet, so werden diese Spulen 15 vorteilhaft in Serie geschaltet.As can be seen in Fig. 1, the LEDs 20 are parallel to each other at the Coil 15 connected. Are on the front and back of the circuit board 14 turns 16 are present and thus actually two coils 15 formed, these coils 15 are advantageously connected in series.

Dies ist auch in Fig. 2 zu erkennen. Hier sind zwei Spulen 15 in Serie dargestellt. Diese wiederum sind über die Anschlussleitungen 18 mit einer Anzahl von parallel geschalteten LED 20 verbunden. In Fig. 2 ist, der Einfachheit halber in einer gemeinsamen Darstellung, sowohl eine Ausführung nur mit LED 20 als auch zusätzlich mit Vorwiderständen 22 in jedem LED-Zweig dargestellt. Durch die Vorwiderstände 22 kann eine zuvor angesprochene Reduzierung der Helligkeitsschwankungen erzielt werden. Die Vorwiderstände 22 sind vorteilhaft möglichst nahe bei den LED 20 auf der Leiterplatte 14 angeordnet. Dies ist insbesondere bei der Verwendung von SMD-Bauteile möglich, da diese sehr klein sind. Die Vorwiderstände weisen auch den großen Vorteil auf, dass dadurch ein Überlastungsschutz gegeben ist. Weiters ist es möglich, andere Mittel zur Spannungsbegrenzung vorzusehen.This can also be seen in FIG. 2. Here are two coils 15 in series shown. These in turn are connected to a via the connecting lines 18 Number of LED 20 connected in parallel. 2 is the For the sake of simplicity in a common representation, both an execution only with LED 20 and additionally with series resistors 22 in shown for each LED branch. Through the series resistors 22 can previously mentioned reduction in brightness fluctuations achieved become. The series resistors 22 are advantageously as close as possible to the LED 20 arranged on the circuit board 14. This is particularly the case with SMD components can be used because they are very small. The Series resistors also have the great advantage of being one Overload protection is given. It is also possible to use other means to be provided for voltage limitation.

Wie in Fig. 2 auch zu erkennen ist, können die LED 20 jeweils abwechselnd gepolt angeschlossen sein. Dadurch können mit LED sowohl positive als auch negative Halbwellen der in den Spulen 15 induzierten Wechselspannung ausgenutzt werden.As can also be seen in FIG. 2, the LEDs 20 can alternate be connected poled. This means that both positive and negative as well as negative half-waves induced in the coils 15 AC voltage can be used.

Nicht dargestellt in den Figuren ist eine mögliche thermische Dämmung. Diese kann jedoch vorteilhaft in etwa die Form der Leiterplatten 14 aufweisen oder etwas größer sein, und mittels Abstandshaltern darüber befestigt sein. Dies ist jedoch für den Fachmann einfach auszuführen.A possible thermal insulation is not shown in the figures. However, this can advantageously have approximately the shape of the printed circuit boards 14 or be a little bit bigger and attached with spacers his. However, this is easy for the person skilled in the art to carry out.

Wie aus Fig. 1 zu erkennen ist, können solche Beleuchtungsvorrichtungen auch nachträglich an Induktionsspulen 12 einer Induktionskochstelle angebracht werden. Durch die Variation des Radius der kreisringsegmentförmigen Beleuchtungsvorrichtung 11 kann leicht eine Anpassung an verschiedene Durchmesser von Induktionsspulen 12 erreicht werden. Besonders vorteilhaft ist vor allem der Wegfall jeglichen Anschlussaufwandes zur Energieversorgung der Leuchtmittel 20.As can be seen from Fig. 1, such lighting devices also subsequently on induction coils 12 of an induction hob be attached. By varying the radius of the circular segment Lighting device 11 can easily adjust can be reached at different diameters of induction coils 12. The elimination of any connection effort is particularly advantageous to supply energy to the illuminants 20.

Claims (15)

Vorrichtung zur Markierung des Betriebs und/oder der Position einer Induktionsspule (12) eines induktiven Kochfelds durch Beleuchtung, dadurch gekennzeichnet, dass die Vorrichtung (11) einen Träger (14) mit wenigstens einem elektrischen Leuchtmittel (20) aufweist, wobei die Vorrichtung (11) des weiteren eine transformatorische Empfangsspule (15) aufweist zur Platzierung im magnetischen Feld der Induktionsspule (12), und wobei die Empfangsspule (15) mit dem Leuchtmittel (20) verbunden ist.Device for marking the operation and / or the position of an induction coil (12) of an inductive hob by lighting, characterized in that the device (11) has a carrier (14) with at least one electrical illuminant (20), the device (11 ) furthermore has a transformer receiving coil (15) for placement in the magnetic field of the induction coil (12), and the receiving coil (15) is connected to the illuminant (20). Vorrichtung nach Anspruch 1, gekennzeichnet durch mehrere Leuchtmittel (20) pro Empfangsspule (15), wobei die Leuchtmittel vorzugsweise LED (20) sind und abwechselnd entgegengesetzt gepolt an der Empfangsspule angeschlossen sind.Apparatus according to claim 1, characterized by a plurality of illuminants (20) per receiving coil (15), the illuminants preferably being LEDs (20) and connected alternately with opposite polarity to the receiving coil. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Empfangsspule (15) auf dem Träger (14) angeordnet ist, wobei vorzugsweise der Träger eine Leiterplatte (14) ist und die Empfangsspule (15) auf die Leiterplatte (14) aufgebrachte Leiterbahnen (16) aufweist.Device according to one of the preceding claims, characterized in that the receiving coil (15) is arranged on the carrier (14), the carrier preferably being a printed circuit board (14) and the receiving coil (15) conductor tracks (15) applied to the printed circuit board (14). 16). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Empfangsspule (15) im äußeren Bereich des Trägers (14) umläuft, vorzugsweise spiralförmig, wobei sie insbesondere auf beiden Seiten des Trägers (14) angeordnet ist.Apparatus according to claim 3, characterized in that the receiving coil (15) rotates in the outer region of the carrier (14), preferably in a spiral, wherein it is arranged in particular on both sides of the carrier (14). Vorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch Spannungsbegrenzungsmittel für die Leuchtmittel (20), wobei vorzugsweise die Spannungsbegrenzungsmittel Vorwiderstände (22) für die Leuchtmittel (20) sind. Device according to one of the preceding claims, characterized by voltage limiting means for the lighting means (20), the voltage limiting means preferably being series resistors (22) for the lighting means (20). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Spannungsbegrenzungsmittel (22) auf demselben Träger (14) angeordnet sind wie die von ihnen versorgten Leuchtmittel (20), vorzugsweise in deren Nähe.Apparatus according to claim 5, characterized in that the voltage limiting means (22) are arranged on the same carrier (14) as the illuminants (20) supplied by them, preferably in the vicinity thereof. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Induktionsspule (12) flach und rund ist, wobei der Träger (14) im wesentlichen Kreisringsektorform aufweist, insbesondere über einen Winkelbereich von ca. 120° verläuft.Device according to one of the preceding claims, characterized in that the induction coil (12) is flat and round, the carrier (14) having an essentially circular sector shape, in particular extending over an angular range of approximately 120 °. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dem wenigstens einen Leuchtmittel (20) Lichtverteilmittel zugeordnet sind zur Erzeugung einer insbesondere länglich verteilten Lichterscheinung aus dem Licht wenigstens eines im wesentlichen punktförmigen Leuchtmittels (20).Device according to one of the preceding claims, characterized in that the at least one illuminant (20) is associated with light distribution means for generating an in particular elongated light phenomenon from the light of at least one essentially point-shaped illuminant (20). Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Lichtverteilmittel über wenigstens einem Leuchtmittel (20) angeordnet sind und vorzugsweise aus durchsichtigem Kunststoff bestehen, wobei insbesondere ihr Verlauf in etwa der Form der Induktionsspule (12) entspricht.Apparatus according to claim 8, characterized in that the light distribution means are arranged above at least one illuminant (20) and preferably consist of transparent plastic, in particular their course roughly corresponds to the shape of the induction coil (12). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass oberhalb der Vorrichtung (11) eine lichtdurchlässige thermische Dämmung vorgesehen ist, wobei die thermische Dämmung vorzugsweise mittels eines Halters oder Abstandshalters mit dem Träger (14) verbindbar ist.Device according to one of the preceding claims, characterized in that a translucent thermal insulation is provided above the device (11), the thermal insulation preferably being connectable to the carrier (14) by means of a holder or spacer. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie zur Nachrüstung einer beliebigen Induktionsspule (12) ausgebildet ist. Device according to one of the preceding claims, characterized in that it is designed for retrofitting any induction coil (12). Induktive Heizeinrichtung mit einer Induktionsspule (12) und einer oberhalb der Induktionsspule (12) angeordneten Abdeckung, insbesondere einem Kochfeld, dadurch gekennzeichnet, dass nahe der Induktionsspule (12) eine Vorrichtung (11) nach einem der vorhergehenden Ansprüche angeordnet ist.Inductive heating device with an induction coil (12) and a cover arranged above the induction coil (12), in particular a hob, characterized in that a device (11) according to one of the preceding claims is arranged near the induction coil (12). Heizeinrichtung nach Anspruch 12, dadurch gekennzeichnet, dass ein oder mehrere Träger (14) die Induktionsspule (12) im wesentlichen umgeben mit einem Abstand von wenigen Zentimetern, wobei vorzugsweise insgesamt pro Induktionsspule (12) mindestens vier Leuchtmittel (20) vorgesehen sind.Heating device according to claim 12, characterized in that one or more carriers (14) surround the induction coil (12) essentially at a distance of a few centimeters, preferably at least four lamps (20) being provided per induction coil (12). Heizeinrichtung nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass zwischen einem Träger (14) und der Abdeckung eine lichtdurchlässige thermische Dämmung vorgesehen ist, die vorzugsweise den gesamten Träger (14) zumindest zur Abdeckung hin abschirmt, wobei insbesondere die thermische Dämmung mit einer IR-reflektierenden Beschichtung versehen ist.Heating device according to claim 12 or 13, characterized in that a translucent thermal insulation is provided between a support (14) and the cover, which preferably shields the entire support (14) at least towards the cover, in particular the thermal insulation with an IR reflective coating is provided. Heizeinrichtung nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass die wenigstens eine Induktionsspule (12) an einer Grundhalterung befestigt ist und der wenigstens eine Träger (14) auf derselben Grundhalterung befestigt ist.Heating device according to one of claims 12 to 14, characterized in that the at least one induction coil (12) is attached to a base bracket and the at least one carrier (14) is attached to the same base bracket.
EP02025914A 2001-11-30 2002-11-20 Device for marking an induction coil through lightning Expired - Lifetime EP1317164B1 (en)

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DE102017220824A1 (en) 2017-11-22 2019-05-23 Arpa Sasu Method for inductive heating of an inductively heated cooking vessel, transfer saucer and inductive cooking appliance for carrying out the method
WO2019135120A1 (en) * 2018-01-08 2019-07-11 BSH Hausgeräte GmbH Hob device
WO2023052060A1 (en) * 2021-09-29 2023-04-06 BSH Hausgeräte GmbH Induction cooking device
WO2023052062A1 (en) * 2021-09-29 2023-04-06 BSH Hausgeräte GmbH Induction cooking device
WO2023052061A1 (en) * 2021-09-29 2023-04-06 BSH Hausgeräte GmbH Induction cooking device

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EP1317164A3 (en) 2004-08-25
DE10159682A1 (en) 2003-06-26
US20030111460A1 (en) 2003-06-19
EP1317164B1 (en) 2007-03-21
DE50209760D1 (en) 2007-05-03
ATE357833T1 (en) 2007-04-15
US6828530B2 (en) 2004-12-07

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