EP0718742A2 - Power management for clocked electrical consumers - Google Patents

Power management for clocked electrical consumers Download PDF

Info

Publication number
EP0718742A2
EP0718742A2 EP95117858A EP95117858A EP0718742A2 EP 0718742 A2 EP0718742 A2 EP 0718742A2 EP 95117858 A EP95117858 A EP 95117858A EP 95117858 A EP95117858 A EP 95117858A EP 0718742 A2 EP0718742 A2 EP 0718742A2
Authority
EP
European Patent Office
Prior art keywords
power
control
consumers
control according
controls
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.)
Granted
Application number
EP95117858A
Other languages
German (de)
French (fr)
Other versions
EP0718742B1 (en
EP0718742A3 (en
Inventor
Manfred Dipl.-Ing. Plankl
Ralf Dipl.-Ing. Schneider (Fh)
Günther Dipl.-Ing. Wittauer (FH)
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.)
BSH Hausgeraete GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0718742A2 publication Critical patent/EP0718742A2/en
Publication of EP0718742A3 publication Critical patent/EP0718742A3/en
Application granted granted Critical
Publication of EP0718742B1 publication Critical patent/EP0718742B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power

Definitions

  • the invention relates to a power control for electrical consumers on the public power supply network, which work predominantly in cyclical operation, for example power controls for large ohmic consumers, heating of household appliances and larger switching capacities of other types in modern households.
  • network perturbation is to be understood as a perturbation known as a flicker, which has the effect of fluctuations in the mains voltage caused by the switching of consumers.
  • the electricity suppliers therefore define permissible switching frequencies depending on the switched outputs.
  • the permissible switching frequency decreases with the amount of power to be switched.
  • Electronic power controls which control power by switching a consumer on and off, generally do this by means of variable switch-on times with a constant period. To performance to be supplied by consumers as evenly as possible, this period should be relatively short. With increasing switching power, this is limited by the flicker rate described above. Especially with large switching capacities, the period that is still permissible is very long.
  • the object of the invention is therefore to adapt the power control of ohmic consumers in cyclical operation to the flicker value conditions.
  • the arrangement according to the invention for solving this problem is characterized in that a controller controls the power supply for predominantly ohmic heavy consumers in accordance with the operating conditions for public power supply networks, limiting conditions, for example network feedback effects, being avoided in a regulating manner by the controller limiting the consumer and / or Controls the duration of the period to vary.
  • a controller controls the power supply for predominantly ohmic heavy consumers in accordance with the operating conditions for public power supply networks, limiting conditions, for example network feedback effects, being avoided in a regulating manner by the controller limiting the consumer and / or Controls the duration of the period to vary.
  • the consumers are heaters that are power-controlled with at least two preferred cycle periods.
  • the figure shows a basic arrangement of a clock-controlled consumer circuit.
  • the figure symbolically shows a controller 1, input elements 2, displays 3 operated by the controller, a power controller 4 and the consumer 5 controlled by the controller via the power controller 4.
  • the controller 1 can be selected on the input side by the input elements in such a way that it decrypts a time-power profile and, accordingly, outputs the controlled power which is matched to the consumer via the power controller 4, which is generally a power relay. It is common practice for the controller to also operate displays which can be used to remove the selected program, display the status of the progress program and signal the end of an operation.
  • the control system supplies the electrical power depending on the physical properties of the selected radiators, whereby the control system for hobs controls energy-optimized depending on the pre-selected power levels and optimizes the power cycle with a variable power-on period up to the permissible mains feedback limit.
  • the heaters aforementioned Concerning hobs, this can be conventional radiant heat sources or halogen radiant heat sources.
  • the period of the power control varies. As the power increases, the period becomes shorter. This can be necessary for every adjustable power level.
  • the invention is realized by a power control according to claim 1, but it can also be arranged depending on the power setting, a number of switchable time modules that implement digital time control.
  • the time control can advantageously be implemented in terms of hardware, for example by means of a special ASIC, but the time control can also be implemented via hardware-related programming steps.
  • the invention takes into account in an advantageous manner that, in the case of input powers of a few percent of the total power, despite longer periods, for example about 2 minutes, the switch-on time is only a few seconds. These short power surges are so evened out by the thermal inertia of the hotplates that this does not have a negative effect on the food to be heated. Amplitudes of a few degrees of temperature are harmless to the heating area and do not negatively affect the cooking result. However, these increasing power surges would be detrimental to larger outputs in the cooking mode, since larger amplitudes in the cooking mode prevent uniform cooking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The power control has an electronic control state (1), regulating the power supplied to the load (5) for preventing feedback to the mains supply network via power limitation and/or period duration variation. The controlled load may be provided by a cooking hob heating element, the electronic control stage coupled to an input element (2) on the input side for selecting the power setting and to a display (3) on the output side, with the power for the load controlled via a power regulator (4).

Description

Die Erfindung bezieht sich auf eine Leistungssteuerung für elektrische Verbraucher am öffentlichen Stromversorgungsnetz, die vorwiegend im Taktbetrieb arbeiten, beispielsweise Leistungssteuerungen für ohm'sche Großverbraucher, Heizungen von Haushaltgeräten und größere Schaltleistungen anderer Art im modernen Haushalt.The invention relates to a power control for electrical consumers on the public power supply network, which work predominantly in cyclical operation, for example power controls for large ohmic consumers, heating of household appliances and larger switching capacities of other types in modern households.

Elektrische Verbraucher dürfen zur Vermeidung von schädigenden Netzrückwirkungen in das Stromversorgungsnetz nicht beliebig häufig ein- und ausgeschaltet werden. Unter Netzrückwirkungen ist in diesem Zusammenhang eine als Flicker bezeichnete Rückwirkung zu verstehen, die zur Auswirkung Netzspannungschwankungen hat, die durch das Schalten von Verbrauchern entstehen. Die Stromversorger definieren daher zulässige Schalthäufigkeiten in Abhängigkeit von geschalteten Leistungen. Die zulässige Schalthäufigkeit nimmt mit der Höhe der zu schaltenden Leistung ab. Elektronische Leistungssteuerungen, die Leistung durch Ein- und Ausschalten eines Verbrauchers steuern, tun dies in aller Regel durch variable Einschaltzeit bei konstanter Periodendauer. Um die Leistung von Verbrauchern möglichst gleichmäßig abzugeben, sollte diese Periodendauer relativ kurz sein. Dies wird mit zunehmender Schaltleistung durch die oben bezeichnete Flickerrate begrenzt. Speziell bei großen Schaltleistungen ist die Periodendauer, die noch zulässig ist, sehr lang.Electrical consumers must not be switched on and off as often as necessary to avoid damaging network effects in the power supply network. In this context, network perturbation is to be understood as a perturbation known as a flicker, which has the effect of fluctuations in the mains voltage caused by the switching of consumers. The electricity suppliers therefore define permissible switching frequencies depending on the switched outputs. The permissible switching frequency decreases with the amount of power to be switched. Electronic power controls, which control power by switching a consumer on and off, generally do this by means of variable switch-on times with a constant period. To performance to be supplied by consumers as evenly as possible, this period should be relatively short. With increasing switching power, this is limited by the flicker rate described above. Especially with large switching capacities, the period that is still permissible is very long.

Aufgabe der Erfindung ist es daher, die Leistungssteuerung von ohm'schen Verbrauchern in Taktbetrieb den Flickerwertbedingungen anzupassen.The object of the invention is therefore to adapt the power control of ohmic consumers in cyclical operation to the flicker value conditions.

Die erfindungsgemäße Anordnung zur Lösung dieser Aufgabe ist dadurch gekennzeichnet, daß eine Steuerung die Leistungszuführung für überwiegend ohm'sche Starkverbraucher gemäß der Betriebsbedingungen für öffentliche Stromversorgungsnetze kontrolliert steuert, wobei Grenzbedingungen, beispielsweise Netzrückwirkungseffekte, regelnd vermieden werden, indem die Steuerung den Verbraucher leistungsbegrenzend und/oder Periodendauer variierend ansteuert. Eine weitere vorteilhafte Lösung der Aufgabenstellung besteht darin, daß die Verbraucher Heizungen sind, die mit mindestens zwei Vorzugs-Taktperioden leistungsgesteuert werden.The arrangement according to the invention for solving this problem is characterized in that a controller controls the power supply for predominantly ohmic heavy consumers in accordance with the operating conditions for public power supply networks, limiting conditions, for example network feedback effects, being avoided in a regulating manner by the controller limiting the consumer and / or Controls the duration of the period to vary. Another advantageous solution to the problem is that the consumers are heaters that are power-controlled with at least two preferred cycle periods.

Es gibt Verbraucher, deren Leistungsaufnahme stark temperaturabhängig ist. Solche Verbraucher bedingen bei geringer eingesteuerter Leistung wegen der hohen Einschaltströme eine gegenüber Betrieb mit Nennleistung sehr viel größere Periodendauer. Beispielsweise sind solche Verbraucher Halogenkochstellen-Heizungen, ohm'sche Widerstandsheizungen oder leistungsstarke Glühlampen. Handelt es sich um einen Heizkörper, beispielsweise eine Halogenkochstellen-Strahlungsheizung, dann kühlt diese durch die kurze Ein- und lange Auszeit stark ab und bleibt somit niederohmig, was beim Wiedereinschalten eine hohe Leistungsaufnahme zur Folge hat, verbunden mit großen Flickerwerten. Bei konventioneller, bisher üblicher Steuerung muß dadurch die Periodendauer insgesamt sehr lang werden, was die Leistungseinsteuerung mit einer ungleichmäßigen Wirkung versieht.There are consumers whose power consumption is strongly temperature-dependent. With low input power, such consumers require a much longer period compared to operation with nominal power because of the high inrush currents. Such consumers are, for example, halogen cooker heaters, ohmic resistance heaters or powerful incandescent lamps. If it is a radiator, for example a halogen hotplate radiant heater, it cools down considerably due to the short on and long off times and thus remains low-resistance, which results in high power consumption when switched on again. combined with large flicker values. In the case of conventional control, which has been customary to date, the period as a whole must therefore become very long, which provides the power control with an uneven effect.

Ein Ausführungsbeispiel nach der Erfindung ist im folgenden anhand der Zeichnung näher beschrieben.An embodiment of the invention is described below with reference to the drawing.

Die Figur zeigt eine prinzipielle Anordnung einer taktgesteuerten Verbraucherschaltung. In der Figur sind symbolisch eine Steuerung 1, Eingabeelemente 2, von der Steuerung bediente Anzeigen 3, ein Leistungssteller 4 und der von der Steuerung über den Leistungssteller 4 angesteuerte Verbraucher 5 dargestellt. Dabei kann die Steuerung 1 durch die Eingabeelemente eingangsseitig so angewählt werden, daß sie ein Zeit-Leistungsprofil entschlüsselt und entsprechend über den Leistungsssteller 4, der in aller Regel ein Leistungsrelais ist, die gesteuerte und auf den Verbraucher abgestimmte Leistung abgibt. Es ist allgemein üblich, daß die Steuerung auch Anzeigen bedient, über die das angewählte Programm nochmals entnehmbar, der Zustand des Fortschrittprogrammes angezeigt, und das Ende einer Operation signalisiert wird. Unterstellt man, daß es sich bei dem Verbraucher um Kochstellenheizungen bei Haushaltgeräten, beispielsweise Kochflächen, handelt, dann sind diese Heizungen mit mindestens zwei Vorzugstaktperioden von der Steuerung leistungsgesteuert steuerbar. Dabei führt die Steuerung die elektrischen Leistungen in Abhängigkeit von den physikalischen Eigenschaften der angewählten Heizkörper zu, wobei die Steuerung für Kochfelder in Abhängigkeit von vorgewählten Leistungstufen energieoptimiert steuert und die Leistungstaktung bei variabler Leistungszuschaltungs-Periodendauer bis zur zulässigen Netzrückwirkungsgrenze optimiert. Die Heizungen, vorgenannte Kochfelder betreffend, können dabei konventionelle Strahlungsheizquellen oder Halogen-Strahlungsheizquellen sein. Bei einem Leistungssteller gemäß der Erfindung variiert die Periodendauer der Leistungssteuerung. Mit zunehmender Leistung wir die Periodendauer kürzer. Dies kann bei jeder einstellbaren Leistungsstufe notwendig werden. In der Regel ist es ausreichend, zwei unterschiedliche Periodendauern zu verwenden, längere Periodendauern bei kleinen Leistungen und kürzere Periodendauer bei mittleren und größeren Leistungen. Für Kochzwecke hat die Erfahrung ergeben, daß feinere Abstufungen keine großen Vorteile mehr erbringen. Die Erfindung ist durch eine Leistungssteuerung gemäß Anspruch 1 realisiert, es kann aber auch in Abhängigkeit von der Leistungseinstellung eine Anzahl umschaltbarer Zeitmodule angeordnet werden, die eine digitale Zeitsteuerung realisieren. In vorteilhafter Weise kann die Zeitsteuerung hardwaremäßig ausgeführt sein, beispielsweise durch einen speziellen ASIC, es kann aber auch über hadwarebedingte Programmierungsschritte die Zeitsteuerung realisiert sein.The figure shows a basic arrangement of a clock-controlled consumer circuit. The figure symbolically shows a controller 1, input elements 2, displays 3 operated by the controller, a power controller 4 and the consumer 5 controlled by the controller via the power controller 4. The controller 1 can be selected on the input side by the input elements in such a way that it decrypts a time-power profile and, accordingly, outputs the controlled power which is matched to the consumer via the power controller 4, which is generally a power relay. It is common practice for the controller to also operate displays which can be used to remove the selected program, display the status of the progress program and signal the end of an operation. Assuming that the consumer is cooking point heaters for household appliances, for example, cooking surfaces, then these heaters can be controlled in a power-controlled manner by the control system with at least two preferred clock periods. The control system supplies the electrical power depending on the physical properties of the selected radiators, whereby the control system for hobs controls energy-optimized depending on the pre-selected power levels and optimizes the power cycle with a variable power-on period up to the permissible mains feedback limit. The heaters, aforementioned Concerning hobs, this can be conventional radiant heat sources or halogen radiant heat sources. In a power controller according to the invention, the period of the power control varies. As the power increases, the period becomes shorter. This can be necessary for every adjustable power level. As a rule, it is sufficient to use two different periods, longer periods for small services and shorter periods for medium and larger services. For cooking purposes, experience has shown that finer gradations no longer offer great advantages. The invention is realized by a power control according to claim 1, but it can also be arranged depending on the power setting, a number of switchable time modules that implement digital time control. The time control can advantageously be implemented in terms of hardware, for example by means of a special ASIC, but the time control can also be implemented via hardware-related programming steps.

Die Erfindung berücksichtigt in vorteilhafter Weise, daß bei eingesteuerten Leistungen von wenigen Prozent der Gesamtleistung, trotz größerer Periodendauern, beispielsweise etwa 2 Minuten, die Einschaltzeit nur wenige Sekunden beträgt. Diese kurzen Leistungsstöße werden durch die thermische Trägheit der Kochstellen so weit vergleichmäßigt, daß sich dies nicht auf das zu erwärmende Gargut negativ auswirkt. Amplituden von einigen Temperaturgraden sind für den Wärmebereich unschädlich und beeinflussen das Garergebnis nicht negativ. Für größere Leistungen im Kochbetrieb wären diese zunehmenden Leistungsstöße aber schädlich, da größere Amplituden im Kochbetrieb gleichmäßiges Kochen ausschließen. Es ist daher steuerungsmäßig berücksichtigt, daß sich beispielsweise Halogen-Strahlungsheizungen in den Heizpausen geringer abkühlen, womit die Einschaltströmen vergleichmäßigt werden, also keine Maximalwerte von Einschaltströmen auftreten können. Damit ist mit zunehmender Leistungseinsteuerung auch eine Verkürzung der Periodendauer möglich, ohne daß die zulässige Flickerrate überschritten wird.The invention takes into account in an advantageous manner that, in the case of input powers of a few percent of the total power, despite longer periods, for example about 2 minutes, the switch-on time is only a few seconds. These short power surges are so evened out by the thermal inertia of the hotplates that this does not have a negative effect on the food to be heated. Amplitudes of a few degrees of temperature are harmless to the heating area and do not negatively affect the cooking result. However, these increasing power surges would be detrimental to larger outputs in the cooking mode, since larger amplitudes in the cooking mode prevent uniform cooking. In terms of control, it is therefore taken into account that, for example, halogen radiant heaters cool down less during the heating breaks, so that the inrush currents are equalized, i.e. no maximum values of inrush currents can occur. With increasing power control, a shortening of the period is possible without the permissible flicker rate being exceeded.

Claims (6)

Leistungssteuerung für elektrische Verbraucher am öffentlichen Stromversorgungsnetz, die vorwiegend im Taktbetrieb arbeiten, beispielsweise Leistungssteuerungen für ohm'sche Großverbraucher, Heizungen von Haushaltgeräten und größere Schaltleistung anderer Art im modernen Haushalt, dadurch gekennzeichnet, daß eine Steuerung (1) die Leistungszuführung für überwiegend ohm'sche Starkverbraucher (5) gemäß der Betriebsbedingungen für öffentliche Stromversorgungsnetze kontrollierend steuert, wobei Grenzbedingungen, beispielsweise Netzrückwirkungseffekte, regelnd vermieden werden, indem die Steuerung den Verbraucher leistungsbegrenzend und/oder periodendauer-variierend ansteuert.Power control for electrical consumers on the public power supply network, which operate predominantly in cyclical operation, for example power controls for large ohmic consumers, heating of household appliances and larger switching capacity of other types in modern households, characterized in that a controller (1) supplies the power for predominantly ohmic ones Heavy consumer (5) controls according to the operating conditions for public power supply networks, whereby boundary conditions, for example network feedback effects, are avoided in a regulating manner by the control activating the consumer to limit the output and / or to vary the period. Leistungssteuerung nach Anspruch 1, dadurch gekennzeichnet, daß die Verbraucher (5) Kochstellenheizungen sind, die mit mindestens zwei Vorzugstaktperioden leistungsgesteuert werden.Power control according to Claim 1, characterized in that the consumers (5) are hotplate heaters which are power-controlled with at least two preferred clock periods. Leistungssteuerung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerung (1) die elektrische Leistung für Kochstellenheizungen in Abhängigkeit von den physikalischen Eigenschaften der angewählten Heizkörper zuführt.Power control according to Claim 1, characterized in that the control (1) supplies the electrical power for hotplate heaters as a function of the physical properties of the selected radiators. Leistungssteuerung nach Anspruch 1, dadurch gekennzeichnet, daß Steuerung (1) elektrische Heizungen für Kochfelder in Abhängigkeit von vorgewählten Leistungsstufen energieoptimiert steuert, wobei die Leistungstaktung bei variabler Leistungszuschaltungs-Periodendauer bis zur zulässigen Netzrückwirkungsgrenze optimiert wird.Power control according to Claim 1, characterized in that the control (1) controls electrical heaters for cooktops in an energy-optimized manner as a function of preselected power levels, the power clocking being optimized with a variable power connection period up to the permissible mains feedback limit. Leistungssteuerung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerung (1) die Heizleistungstaktung für Kochfelder, die konventionelle Strahlungsheizquellen sind, optimiert.Power control according to claim 1, characterized in that the control (1) optimizes the heating power cycle for hobs which are conventional radiant heating sources. Leistungssteuerung nach Anspruch 1, dadurch gekennzeichnet, daß Steuerung (1) die Heizleistungstaktung für Kochfelder, die Halogen-Strahlungsheizquellen besitzen, optimiert.Power control according to Claim 1, characterized in that the control (1) optimizes the heating power cycle for hobs which have halogen radiant heating sources.
EP95117858A 1994-12-20 1995-11-13 Power management for clocked electrical consumers Expired - Lifetime EP0718742B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445559 1994-12-20
DE4445559A DE4445559A1 (en) 1994-12-20 1994-12-20 Power control for clocked electrical consumers

Publications (3)

Publication Number Publication Date
EP0718742A2 true EP0718742A2 (en) 1996-06-26
EP0718742A3 EP0718742A3 (en) 1997-12-17
EP0718742B1 EP0718742B1 (en) 2001-10-10

Family

ID=6536437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117858A Expired - Lifetime EP0718742B1 (en) 1994-12-20 1995-11-13 Power management for clocked electrical consumers

Country Status (3)

Country Link
EP (1) EP0718742B1 (en)
DE (2) DE4445559A1 (en)
ES (1) ES2167398T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7478367B2 (en) 2005-01-11 2009-01-13 International Business Machines Corporation Dynamic source code analyzer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941299A1 (en) * 1999-08-31 2001-03-01 Eckhard Wahl Controller for electric cooker plate heat regulation has electronic time switch combined with heat sensor, each plate having only two connections, electronic time switch element controls heat

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064239A (en) * 1979-11-23 1981-06-10 Thorn Domestic Appliances Ltd Power supply for electric cooker
GB2153555B (en) * 1984-01-26 1987-07-22 Thorn Emi Domestic Appliances Temperature control of heating apparatus
DE3539581A1 (en) * 1985-11-08 1987-05-21 Philips Patentverwaltung METHOD FOR CONTROLLING SEVERAL ELECTRICAL LOADS
US5293028A (en) * 1987-01-05 1994-03-08 General Electric Company Cooktop appliance with improved power control
DE9314747U1 (en) * 1993-09-30 1994-02-10 Rowenta Werke Gmbh Electrical circuit arrangement for the flicker standard-compliant and network feedback-free heating power control of heating resistors of electrical household appliances, in particular electrical bread toasters

Non-Patent Citations (1)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7478367B2 (en) 2005-01-11 2009-01-13 International Business Machines Corporation Dynamic source code analyzer
US8572572B2 (en) 2005-01-11 2013-10-29 International Business Machines Corporation Dynamic source code analyzer

Also Published As

Publication number Publication date
DE4445559A1 (en) 1996-06-27
ES2167398T3 (en) 2002-05-16
EP0718742B1 (en) 2001-10-10
EP0718742A3 (en) 1997-12-17
DE59509682D1 (en) 2001-11-15

Similar Documents

Publication Publication Date Title
US4829159A (en) Method of optimizing control of plural switched electric loads to reduce switching transients
DE4022846C2 (en) Device for power control and limitation in a heating surface made of glass ceramic or a comparable material
US5293028A (en) Cooktop appliance with improved power control
EP2100478B1 (en) Method for controlling induction heating devices in an electric cooking appliance
EP0646343A1 (en) Electrical switch arrangement to control, according to the norms for flickering and without system disturbances, the heating resistances of electrical household appliances, in particular electrical toasters
EP1674797B1 (en) Household appliance
EP0777169B1 (en) Power controlling device for a radiation heating device
EP0828406B1 (en) Device for limiting and distributing the electric power used by a cooking hob
EP1838137B1 (en) Method and circuit assembly for controlling at least one heating element of a heating device
EP0718742B1 (en) Power management for clocked electrical consumers
DE4016525A1 (en) CONTROL CIRCUIT FOR A HEATER
DE4104677A1 (en) Temperature control method for ceramic hotplate - using proximity control and progressive power reduction to approach set temperature
DE4038560A1 (en) Power control of microwave and induction heating cooker - involves microprocessor limiting load on inverter by switching of microwave oscillator and regulation of induction energy
EP0719072A2 (en) Power control circuit for an electric consumer, particularly heating elements for cooktops
EP1318696B1 (en) Method for electrically heating a furnace for thermal treatment of metallic workpieces
DE10147074A1 (en) Method for operating a multi-stage electric heater consisting of several heating elements
DE19620567A1 (en) Electronic control unit for radiation heater of cooker
DE19851029C2 (en) Method for adjusting the limit value of the operating temperature of a glass / glass-ceramic cooking surface and apparatus for carrying out the method
DE3908242A1 (en) Heating device
DE102013223278B4 (en) Hybrid home appliance
EP2129969A2 (en) Method for preventing the accidental operation of a heating appliance
DE3345991C2 (en)
DE3815686C2 (en)
EP2590475B1 (en) Induction heating device
DE19713315C2 (en) Circuit for assigning power control signals to hotplates

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: H05B 3/74

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH

17P Request for examination filed

Effective date: 19980615

17Q First examination report despatched

Effective date: 19991109

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REF Corresponds to:

Ref document number: 59509682

Country of ref document: DE

Date of ref document: 20011115

ET Fr: translation filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20011219

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2167398

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20101124

Year of fee payment: 16

Ref country code: GB

Payment date: 20101123

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20121113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121113

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20141130

Year of fee payment: 20

Ref country code: ES

Payment date: 20141120

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20141118

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 59509682

Country of ref document: DE

Owner name: BSH HAUSGERAETE GMBH, DE

Free format text: FORMER OWNER: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, 81739 MUENCHEN, DE

Effective date: 20150408

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: BSH HAUSGERATE GMBH

Effective date: 20150527

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59509682

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20160226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20151114