US 11,791,691 B2
Generator cooling system for turbo-fan engine
Naoki Seki, Tokyo (JP); Toshikazu Kobayashi, Tokyo (JP); and Shotaro Ishii, Tokyo (JP)
Assigned to IHI CORPORATION, Tokyo (JP)
Filed by IHI CORPORATION, Tokyo (JP)
Filed on Oct. 22, 2021, as Appl. No. 17/451,860.
Application 17/451,860 is a continuation of application No. PCT/JP2020/006463, filed on Feb. 19, 2020.
Claims priority of application No. 2019-136075 (JP), filed on Jul. 24, 2019.
Prior Publication US 2022/0045573 A1, Feb. 10, 2022
Int. Cl. H02K 5/20 (2006.01); H02K 7/18 (2006.01)
CPC H02K 7/1823 (2013.01) [F05D 2220/76 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A system for cooling a generator and an electric power cable connected to the generator, the generator and the electric power cable being disposed in a hot section of a turbo-fan engine, the system comprising:
a junction box;
a bypass air duct that supplies, to the junction box, air extracted from a portion of a bypass flow path of the turbo-fan engine on a side further downstream than a fan outlet;
a core air duct that supplies, to the junction box, air extracted from a portion of a core flow path of the turbo-fan engine on a side further upstream than a compressor outlet; and
a cooling air duct that extends from the junction box to a space in which the generator is accommodated and accommodates the electric power cable inside the cooling air duct,
wherein valves that are able to be independently controlled to open and close are provided at downstream ends of the bypass air duct and the core air duct.