US 12,255,010 B2
Soundproofing transformer
Nowak Dariusz, Zurich (CH); Bosnjak Bruno, Zurich (CH); Holaus Walter, Zurich (CH); and Walker Jonas, Zurich (CH)
Assigned to Hyundai Electric & Energy Systems Co., Ltd., Seoul (KR)
Appl. No. 17/617,235
Filed by Hyundai Electric & Energy Systems Co., Ltd., Seoul (KR)
PCT Filed May 19, 2020, PCT No. PCT/KR2020/006525
§ 371(c)(1), (2) Date Dec. 7, 2021,
PCT Pub. No. WO2020/251178, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 10-2019-0069998 (KR), filed on Jun. 13, 2019.
Prior Publication US 2022/0238273 A1, Jul. 28, 2022
Int. Cl. H01F 27/33 (2006.01); H01F 27/02 (2006.01); H01F 27/12 (2006.01)
CPC H01F 27/33 (2013.01) [H01F 27/02 (2013.01); H01F 27/025 (2013.01); H01F 27/125 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A soundproofing transformer, comprising:
a tank;
a winding portion and a core portion provided inside the tank;
an insulating fluid provided inside the tank;
a reinforcing member provided outside of the tank;
a cavity having a resonance space and connected to the reinforcing member by a coupling member;
a partition member stacked on the cavity and having an acoustic absorption portion;
a noise inlet member having a first inlet facing the tank, connected to the resonance space, and configured to transmit noise introduced from the first inlet to the resonance space; and
a noise reduction panel connected to the partition member and the noise inlet member, and having a second inlet provided to communicate with the acoustic absorption portion while facing the tank,
wherein the cavity comprises a noise inlet hole formed in a surface facing the second inlet to communicate with the resonance space.