公开(公告)号：US20240310050A1

公开(公告)日：2024-09-19

申请号：US18272928

申请日：2022-01-13

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Alex VIROLI ,  Massimo NOSTRO ,  Filippo MILANESI ,  Jose PEREZ

IPC: F24C7/08 ,  H05B1/02 ,  H05B6/06

CPC classification number: F24C7/083 ,  H05B1/0266 ,  H05B6/062

Abstract: There is described a domestic appliance (1), in particular a cooking hob (2), for the thermal treatment of food products comprising at least one or more cooking zones (2), a power supply unit (5) being controllable into at least a stand-by mode and a powered-on mode and being configured to supply an energy to the one or more cooking zones (2) when being controlled in the pow-cred-on mode and a control group (17) coupled to the power supply unit (5) and configured to control the power supply unit (5) from the stand-by-mode into the powered-on mode; wherein the control group (17) is controllable between a rest configuration and an active configuration at which control group (17) is configured to set the power supply unit (5) from the stand-by-mode into the powered-on mode. The control group (17) comprises at least one magnetic switching device (18) having a magnetic and/or ferromagnetic element (19), the magnetic and/or ferromagnetic element (19) being moveable between at least a rest state and an active state. The control group (17) is controlled in the rest configuration and the active configuration with the magnetic and/or ferromagnetic element (19) being positioned in respectively the rest state and the active state. The magnetic and/or ferromagnetic element is biased in the rest state and is controllable by means of interaction with a metallic and/or magnetic and/or ferromagnetic activation device into the active state.

公开(公告)号：US20240053027A1

公开(公告)日：2024-02-15

申请号：US18267628

申请日：2021-12-10

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Gerhard KLEIN ,  Filippo MILANESI ,  Alex VIROLI ,  Daniele CASO ,  Ulrich HÄUTLE ,  Elisabeth REBELEIN

IPC: F24C15/10 ,  H05B6/12 ,  H01R4/48

CPC classification number: F24C15/108 ,  H05B6/1209 ,  H01R4/4863

Abstract: A household appliance (10) comprises a housing or an installation case (112), particularly a protection box. The household appliance (10) further comprises at least two of a consumer load (132, 232) for consumption of electrical power, a delivery system for delivery of electrical power to the at least one consumer load (132, 232), mains connection means for a connection of the household appliance (10) to the electric power supply, a control unit and/or an operating panel (20) for appliance control and/or for user interaction, and at least one connection means (144, 144′, 146, 146′, 258, 256, 260′) for electrical connection of the at least two of the consumer load (132, 232), the delivery system for electrical power, the mains connection means, and the control unit and/or the operating panel (20). The at least two of the consumer load (132, 232), the delivery system for electrical power, the mains connection means, and the control unit and/or the operating panel (20) are arranged or arrangeable within the housing or installation case (112) in superimposed levels. Furthermore, at least one of the consumer load (132, 232), the delivery system for electrical power, the mains connection means, and the control unit and/or the operating panel (20) comprises a first connection means (144, 144′, 258) for electrical connection, which is connectable to a second connection means (146, 146′, 260, 260′) for electrical connection in a connection movement, which points in the same direction as or complies with an assembly movement for assembling the at least one of the consumer load (132, 232), the delivery system for electrical power, the mains connection means, and the control unit and/or the operating panel (20) in the housing or installation case (112). Said second connection means (146, 146′, 260, 260′) is arranged or has been arranged in the housing or installation case (112).

公开(公告)号：US20220248505A1

公开(公告)日：2022-08-04

申请号：US17625926

申请日：2020-07-15

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Chunlong XU ,  Alex VIROLI ,  Massimo NOSTRO ,  Massimo ZANGOLI

IPC: H05B6/06 ,  H05B6/12

Abstract: The invention relates to a method for controlling the provision of electric power to an inductive element, in particular an induction coil (L), of an induction cooking appliance (1), the induction cooking appliance (1) comprising a circuitry (10) with an input (11), at least one switching element (S) for providing pulsed electric power to the inductive element, in particular the induction coil (L) and a capacitive element, in particular a capacitor (C) being connected in parallel, in particular in series, to the switching element (S), the method comprising the steps of: —receiving rectified AC-voltage (Vin) at the input (11) of the circuitry (10); —discharging, in particular during a first section/phase (P1), the capacitive element, in particular the capacitor (C) in order to reduce the voltage provided to the switching element (S), in particular during a first period of rectified AC-voltage (Vin); —after at least partially discharging the capacitive element, in particular the capacitor (C), starting, in particular as a second section/phase (P2), a switching operation of the switching element (S), in particular during a second period of rectified AC-voltage (Vin); —stopping the switching operation after a switching operation time, in particular during the second period of rectified AC-voltage (Vin); —iterating the steps of discharging of capacitor (C), starting of switching operation and stopping of switching operation, in particular immediately subsequently, in subsequent periods of rectified AC-voltage (Vin).

公开(公告)号：US20240040674A1

公开(公告)日：2024-02-01

申请号：US18265918

申请日：2021-11-24

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Emanuel URGESE ,  Alex VIROLI ,  Massimo NOSTRO ,  Massimo ZANGOLI ,  Filippo MILANESI ,  Giacomo CORSI ,  Alan MENGOZZI

IPC: H05B6/06 ,  H05B6/12

CPC classification number: H05B6/065 ,  H05B6/1272

Abstract: There is described an induction cooking hob (1, 1′, 1″) comprising at least one cooking zone (2) for heating a cooking vessel. The cooking zone (2) comprises at least a first induction coil (3) and a second induction coil (4), the first induction coil (3) and the second induction coil (4) being configured to heat the cooking vessel alone or in collaboration with one another. The induction cooking hob (1, 1′, 1″) further comprises a power unit (6) operatively connected to and configured to power the first induction coil (3) and the second induction coil (4) and a control interface (5) configured to receive a requested power from a user, the requested power defining and/or being indicative about the power to be delivered to the cooking vessel. The power unit (6) is configured to power the first induction coil (3) and the second induction coil (4) such that the first induction coil (3) delivers, in use, a first power ranging between a first minimum deliverable power and a first maximum deliverable power and the second induction coil (4) delivers, in use, a second power ranging between a second minimum deliverable power and a second maximum deliverable power. The power unit (6) is configured to power the first induction coil (3) and the second induction coil (4) according to a respective powering scheme chosen from a set of powering schemes. The power unit (6) is configured to choose the respective powering scheme in function of the requested power and the first minimum deliverable power, the second minimum deliverable power, the first maximum deliverable power and the second maximum deliverable power.

公开(公告)号：US20230007740A1

公开(公告)日：2023-01-05

申请号：US17782292

申请日：2020-11-30

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Emanuel URGESE ,  Massimo NOSTRO ,  Alex VIROLI ,  Massimo ZANGOLI ,  Filippo MARTINI ,  Fabio ANGELI

IPC: H05B6/12 ,  H05B6/06 ,  H02M7/523

Abstract: Method to control a quasi-resonant inverter (13) in an induction cooking appliance (1) provided with induction heating coil (4). The quasi-resonant inverter (13) comprises a switching device (21) electrically connected to the induction heating coil (4) by a node (20) having a first voltage (VC(t)) which is indicative of the voltage across the power switching device (21). The method comprising the steps of: providing to the switching device (21) an enabling signal (K1) comprising a plurality of pulses, in order to switch-on and switch-off said switching device (21) for a switch-on period (tON) and a switch-off period (tOFF), determining a second voltage (VCmin) indicative of the minimum value of the first voltage (VC(t)) during the switch- off period (tOFF), regulating the switch-off period (tOFF) based on the second voltage (VCmin), and regulating the enabling signal (K1) based on the regulated switch-off period (tOFF).

公开(公告)号：US20220386425A1

公开(公告)日：2022-12-01

申请号：US17772550

申请日：2020-10-26

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Michele FORTI ,  Massimo ZANGOLI ,  Laurent JEANNETEAU ,  Alex VIROLI

IPC: H05B6/06 ,  H05B6/12

Abstract: The invention relates to an induction-based cooking appliance comprising multiple heating power transferring elements (3a, 3b) and multiple heating power energy units (5a, 5b) for powering said heating power transferring elements (3a, 3b), each heating power energy unit (5a, 5b) comprising one or more power switching devices, in particular power transistors, for providing electrical power to the heating power transferring elements (3a, 3b), wherein: —said power switching devices, in particular power transistors, included in said multiple heating power energy units (5a, 5b) are wide bandgap power switching devices, in particular wide bandgap transistors, comprising more in particular semiconductor materials with a bandgap greater than 2 eV, and/or are configured to be operated in a first frequency range (FR1) and in a second frequency range (FR2) different or at least essentially identical, in particular identical, to the first frequency range (FR1); or—a first heating power transferring element (3a) is powered by a heating power energy unit (5a) comprising a first type (T1) of power switching device, in particular power transistor, adapted to be operated in a first frequency range (FR1) and a second heating power transferring element (3b) is powered by a heating power energy unit (5b) comprising a second type (T2) of power switching device, in particular power transistor, adapted to be operated in a second frequency range (FR2) different or at least essentially identical, in particular identical, to the first frequency range (FR1).

公开(公告)号：US20220369431A1

公开(公告)日：2022-11-17

申请号：US17623965

申请日：2020-06-26

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Alex VIROLI ,  Massimo NOSTRO ,  Massimo ZANGOLI ,  Filippo MILANESI ,  Fabio ANGELI ,  Svend Erik CHRISTIANSEN

IPC: H05B6/06

Abstract: The present invention relates to a method for controlling an induction cooking hob, wherein said method comprises an operation mode for estimating the energy efficiency (EE), and wherein said operation mode includes the steps of: a) estimating (12) the dissipated electric energy (ED) of the induction cooking hob, b) comparing (14) the dissipated electric energy (ED) with a threshold value (EDthr) for said dissipated electric energy (ED), c) maintaining (16) the current working parameters of the induction cooking hob, if the dissipated electric energy (ED) is not bigger than the threshold value (EDthr), d) changing (18) the current working parameters, if the dissipated electric energy (ED) is bigger than the threshold value (EDthr), and e) repeating the steps a) and b) and then c) or d), respectively, after a predetermined time period.

公开(公告)号：US20210410237A1

公开(公告)日：2021-12-30

申请号：US17469977

申请日：2021-09-09

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Laurent JEANNETEAU ,  Alex VIROLI ,  Massimo NOSTRO ,  Federico BALEST

IPC: H05B6/06 ,  H05B6/12

Abstract: The invention relates to a method for operating an induction hob (1), the induction hob (1) comprising a power circuit portion (2) with at least one switching element adapted to provide pulsed electric power to an induction coil (3) and a control entity (4) for controlling operating parameters of the switching element, the method comprising the steps of: performing a control loop with control cycles in order to detect coupling changes between the induction coil (3) and a piece of cookware, said control cycles comprising the steps of: receiving frequency information (fcurr) and power information (Pcurr) at said control entity (4); calculating at least one relation coefficient (Ds′, Ds″) based on said frequency information (fcurr) and said power information (Pcurr); and comparing said relation coefficient (Ds′, Ds″) with a relation coefficient boundary, thereby deriving a comparison result; deciding, based on the comparison result, whether to: perform a new control cycle of said control loop or whether to stop said control loop and said provision of pulsed electric power to the induction coil (3) and restart said control loop after updating an operating parameter of the switching element.

公开(公告)号：US20200253002A1

公开(公告)日：2020-08-06

申请号：US16652163

申请日：2018-10-08

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Alex VIROLI ,  Simone SANTILANO ,  Laurent JEANNETEAU ,  Massimo ZANGOLI ,  Filippo MILANESI ,  Emanuel URGESE

IPC: H05B6/04 ,  H02M1/44 ,  H01F27/24 ,  H01F27/28

Abstract: Induction hob comprising an AC power input (2) and a power conversion entity (3) adapted to provide high frequency electric current to an induction coil, wherein an electromagnetic filtering section (1) is provided between said AC power input (2) and said power conversion entity (3), said electromagnetic filtering section (1) comprising common mode filtering means and differential mode filtering means, wherein said electromagnetic filtering section (1) comprises a closed magnetic core element (4) around which at least two coils (5, 6) are provided, said closed magnetic core element (4) and said coils (5, 6) providing said common mode filtering means, and wherein said differential mode filtering means are adapted to enable a direct magnetic flux between the coil ends (5.1, 5.2, 6.1, 6.2) of each coil (5, 6) in order to obtain differential mode filtering effect.

公开(公告)号：US20190254126A1

公开(公告)日：2019-08-15

申请号：US16342099

申请日：2017-09-22

Applicant: ELECTROLUX APPLIANCES AKTIEBOLAG

Inventor： Alex VIROLI ,  Laurent JEANNETEAU ,  Filippo MILANESI

IPC: H05B6/36 ,  H05B6/10 ,  H05B6/12 ,  H05B6/06

CPC classification number: H05B6/365 ,  H05B6/062 ,  H05B6/101 ,  H05B6/1245 ,  H05B6/1254 ,  Y02B40/126

Abstract: The invention relates to an induction heating arrangement comprising an induction coil (2) and a ferrite element arrangement (3), said ferrite element arrangement (3) comprising one or more ferrite portions (4), each ferrite portion (4) being formed by a ferrite element group comprising multiple ferrite elements (5), wherein the ferrite elements (5) of said ferrite element group are arranged according to a grid pattern in order to build a ferrite portion (4) with a desired shape.