US 12,232,242 B2
Power supply circuit for a cooking device and cooking device
Massimo Zangoli, Forli (IT); Massimo Nostro, Forli (IT); Alex Viroli, Forli (IT); Andrea Rossi, Forli (IT); Enrico Valentini, Forli (IT); and Emanuel Urgese, Forli (IT)
Assigned to Electrolux Appliances Aktiebolag, Stockholm (SE)
Appl. No. 17/433,635
Filed by ELECTROLUX APPLIANCES AKTIEBOLAG, Stockholm (SE)
PCT Filed Feb. 20, 2020, PCT No. PCT/EP2020/054560
§ 371(c)(1), (2) Date Aug. 25, 2021,
PCT Pub. No. WO2020/178043, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 19160569 (EP), filed on Mar. 4, 2019.
Prior Publication US 2022/0151035 A1, May 12, 2022
Int. Cl. H05B 6/06 (2006.01); H05B 6/04 (2006.01); H05B 6/12 (2006.01); H02M 7/217 (2006.01)
CPC H05B 6/065 (2013.01) [H05B 6/04 (2013.01); H05B 6/1272 (2013.01); H02M 7/217 (2013.01); H05B 2213/03 (2013.01)] 18 Claims
OG exemplary drawing
 
1. Power supply circuit for an induction hob, comprising:
a single frequency adapting unit for adapting an external supply signal into an internal AC supply signal,
up to three DC signal generating units, each for converting said internal AC supply signal into one or two signal components of an internal DC supply signal, and
up to four heating frequency generating units, each adapted to convert at least one DC supply signal supplied by at least one said DC signal generating unit into a heating frequency signal for supplying at least one heating unit with electrical power,
wherein the DC output of a first said DC signal generating unit is connected to a first DC input of a first said heating frequency generating unit and a DC output of a second said DC signal generating unit is connected to a second DC input of the first said heating frequency generating unit; and/or
wherein a DC output of a third said DC signal generating unit is connected to a first DC input of a second said heating frequency generating unit and the DC output of the second said DC signal generating unit is connected to a second DC input of the second said heating frequency generating unit.