US 12,342,443 B2
Induction heating device with improved interference noise elimination and output control functions
Dooyong Oh, Seoul (KR); Byeong Wook Park, Seoul (KR); Seungbok Ok, Seoul (KR); and Jae-Woo Lee, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on May 12, 2023, as Appl. No. 18/196,840.
Application 18/196,840 is a continuation of application No. 16/956,311, granted, now 11,690,141, previously published as PCT/KR2018/014878, filed on Nov. 28, 2018.
Claims priority of application No. 10-2017-0176046 (KR), filed on Dec. 20, 2017.
Prior Publication US 2023/0284346 A1, Sep. 7, 2023
Int. Cl. H05B 6/04 (2006.01); H05B 6/06 (2006.01)
CPC H05B 6/04 (2013.01) [H05B 6/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An induction heating device, comprising:
a resonance circuit including a working coil and a resonance capacitor;
an inverter configured to perform a switching operation to supply resonance currents to the working coil;
a plurality of snubber capacitors electrically connected to the inverter;
a direct current (DC) link capacitor, the DC link capacitor having (i) a first end electrically connected to the inverter and (ii) a second end electrically connected to a ground; and
a relay configured to electrically connect one of the plurality of snubber capacitors to selectively one of the resonance capacitor and the ground.