US 10,772,161 B2Granted

Method for controlling an induction cooking hob including a number of induction coils

AssigneeElectrolux Appliances Aktiebolag

InventorsLaurent Jeanneteau, Massimo Nostro, Alex Viroli, Nicola Terracciano

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Abstract

A method for controlling a cooking hob including induction coils, wherein a heating process includes time cycles subdivided into time slots. The method includes: setting a requested power for each induction coil to be activated by a user, defining a group of induction coils that have the same requested power, determining a number of time slots given by the number of different requested powers, activating all groups of induction coils to be activated during a first time slot at a same current power for a calculated duration, and activating a part of groups of induction coils to be activated during a further time slot at the same current powers in each time slot for a calculated duration if more than one group of induction coils are defined, so that an average current power of each induction coil within the time cycle corresponds with the requested power for the induction coil.

Claims13

Dependent claims

A method for controlling an induction cooking hob (10) including a number of induction coils (12, 14, 16, 18;

38, 40), wherein a heating process includes a plurality of subsequent fixed time cycles subdivided into one or more flexible time slots (ts), and wherein each induction coil (12, 14, 16, 18;
38, 40) is driven by at least one dedicated induction generator (22, 24, 26, 28), and wherein the method comprises the following steps:
setting a requested power (rPj) for each induction coil (12, 14, 16, 18;
38, 40) to be activated by a user,
defining at least one group of one or more induction coils (12, 14, 16, 18;
38, 40), wherein the induction coils (12, 14, 16, 18;
38, 40) of one group have the same requested power (rPj),
determining a number of time slots (Nts) for each time cycle, wherein the number of time slots (Nts) is given by the number of groups of induction coils (12, 14, 16, 18;
38, 40) having the same requested power (rPj),
activating all groups of induction coils (12, 14, 16, 18;
38, 40) to be activated during a first time slot (ts1) at a same current power (cP(1)) for a calculated duration (T(1)), and
activating a part of groups of induction coils (12, 14, 16, 18;
38, 40) to be activated during at least one further time slot (ts2, ts3, ts4) at the same current powers (cP(2), cP(3), cP(4)) in each time slot (ts2, ts3, ts4) for a calculated duration (T(2), T(3), T(4)), if more than one group of induction coils (12, 14, 16, 18;
38, 40) are defined,
so that an average current power (aPj) of each induction coil (12, 14, 16, 18;
38, 40) within the time cycle corresponds with the requested power (rPj) for said induction coil (12, 14, 16, 18;
38, 40).

14 more elements

An induction cooking hob (10) including a number of induction coils (12, 14, 16, 18;

38, 40), said induction cooking hob (10) being configured to perform a heating process including a plurality of subsequent fixed time cycles subdivided into one or more flexible time slots (ts), and wherein the induction cooking hob (10) includes at least one induction generator (22, 24, 26, 28) for each induction coil (12, 14, 16, 18;
38, 40), so that each induction coil (12, 14, 16, 18;
38, 40) is driven by at least one dedicated induction generator (22, 24, 26, 28), and wherein the induction cooking hob (10) includes a control unit (30) configured to:
set a requested power (rPj) for each induction coil (12, 14, 16, 18;
38, 40) to be activated by a user,
define at least one group of one or more induction coils (12, 14, 16, 18;
38, 40), wherein the induction coils (12, 14, 16, 18;
38, 40) of one group have the same requested power (rPj),
determine a number of time slots (Nts) for each time cycle, wherein the number of time slots (Nts) is given by the number of groups of induction coils (12, 14, 16, 18;
38, 40) having the same requested power (rPj),
activate all groups of induction coils (12, 14, 16, 18;
38, 40) to be activated during a first time slot (tsl) at a same current power (cP(1)) for a calculated duration (T(1)), and
activate a part of groups of induction coils (12, 14, 16, 18;
38, 40) to be activated during at least one further time slot (ts2, ts3, ts4) at the same current powers (cP(2), cP(3), cP(4)) in each time slot (ts2, ts3, ts4) for a calculated duration (T(2), T(3), T(4)), if more than one group of induction coils (12, 14, 16, 18;
38, 40) are defined,
so that an average current power (aPj) of each induction coil (12, 14, 16, 18;
38, 40) within the time cycle corresponds with the requested power (rPj) for said induction coil (12, 14, 16, 18;
38, 40).

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/572,932Filed 28 Jun 2016
Priority: EP 151760489 Jul 2015
Published: US 2018/0146514 A124 May 2018
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H05B 6/065
For cooking plates or the like: using coordinated control of multiple induction coils
H05B 2213/03
Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00: heating plates made out of a matrix of…
H05B 2213/05
Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00: heating plates with pan detection means
H05B
Electric heating

Family

US 2018/0146514 A1Pre-grant publication · published 24 May 2018
US 10,772,161 B2This patent

From the US filing history. Foreign family members aren’t listed.

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