US 12,255,003 B2
Radiator for a transformer having improved cooling
Bernardo Galletti, Nussbaumen (CH); Andreas Blaszczyk, Zurich (CH); and Wei Wu, Raleigh, NC (US)
Assigned to HITACHI ENERGY LTD, Zürich (CH)
Appl. No. 17/286,021
Filed by Hitachi Energy Ltd, Zürich (CH)
PCT Filed Oct. 2, 2019, PCT No. PCT/EP2019/076713
§ 371(c)(1), (2) Date Apr. 16, 2021,
PCT Pub. No. WO2020/078723, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 18201588 (EP), filed on Oct. 19, 2018.
Prior Publication US 2021/0383956 A1, Dec. 9, 2021
Int. Cl. H01F 27/14 (2006.01); H01F 27/02 (2006.01)
CPC H01F 27/14 (2013.01) [H01F 27/025 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Radiator for a transformer, the radiator comprising a plurality of radiator panels with at least a first radiator panel and a second radiator panel, the first and the second radiator panels extending in a substantially vertical direction, and each of the plurality of radiator panels having a bottom edge,
the first and the second radiator panels forming an air duct providing a gap there-between having a width of smaller than 90 mm, and
the bottom edge of the first radiator panel being located at a lower vertical height position than the bottom edge of the second radiator panel;
the first radiator panel being located at a side of the radiator that is adapted to be attached to a transformer in such a manner that the first radiator panel and a side of the transformer form a transformer air duct; and
each radiator panel of the plurality of radiator panels having a horizontal depth of at least 8 times the width of the air duct.