US 12,338,773 B2
Gas turbine engine having a compressor, combustor and turbine aligned along a rotating shaft
Sho Sakamoto, Kobe (JP); Hiromasa Ikai, Kobe (JP); Tatsuya Okuwa, Kobe (JP); and Hikaru Maesato, Kobe (JP)
Assigned to KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
Appl. No. 17/799,029
Filed by KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
PCT Filed Feb. 12, 2021, PCT No. PCT/JP2021/005296
§ 371(c)(1), (2) Date Aug. 11, 2022,
PCT Pub. No. WO2021/162102, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 2020-023204 (JP), filed on Feb. 14, 2020.
Prior Publication US 2023/0069494 A1, Mar. 2, 2023
Int. Cl. F02C 7/16 (2006.01); F02C 7/22 (2006.01)
CPC F02C 7/16 (2013.01) [F02C 7/22 (2013.01); F05D 2220/323 (2013.01); F05D 2240/35 (2013.01); F05D 2260/213 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A gas turbine engine in which a compressor, a combustor, and a turbine are arranged so as to be lined up along a rotating shaft,
the gas turbine engine comprising:
a casing accommodating the compressor, the combustor, and the turbine;
plural fuel pumps arranged outside the casing;
plural electric motors arranged outside the casing and each configured to drive a corresponding one of the plural fuel pumps;
a fuel inflow member including a fuel inflow passage through which fuel to be sucked by the plural fuel pumps flow;
a fuel outflow member including a fuel outflow passage through which the fuel discharged from the plural fuel pumps flows toward the combustor; and
a controller configured to control the plural electric motors in accordance with inputs including a rotational frequency of the rotating shaft and a driving command value, wherein:
the fuel inflow member includes a heat exchanger portion that is thermally connected to the plural electric motors;
the heat exchanger portion is adjacent to the plural electric motors and cools the plural electric motors by heat exchange between the plural electric motors and the fuel flowing through the heat exchanger portion;
the heat exchanger portion of the fuel inflow member covers the plural electric motors from outside;
the heat exchanger portion is a common buffer tank portion that accommodates the plural electric motors;
the electric plural motors are lined up in a circumferential direction along an outer peripheral surface of the casing;
the common buffer tank portion has an arch shape along the outer peripheral surface of the casing; and
the controller is configured to determine, based on the inputs, one electric motor to be stopped among the plural electric motors such that the number of operating electric motors in operation decreases,
wherein the plural electric motors are immersed in the fuel in the heat exchanger portion.