US 12,247,740 B2
Fuel injector, combustor including the fuel injector, and gas turbine including the combustor
Kiyoshi Fujimoto, Yokohama (JP); Shinichi Fukuba, Tokyo (JP); Mitsuhiro Nakao, Tokyo (JP); Yoshikazu Matsumura, Yokohama (JP); Kota Yoshino, Yokohama (JP); Satoshi Takiguchi, Tokyo (JP); Sosuke Nakamura, Yokohama (JP); and Shinji Akamatsu, Yokohama (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/928,771
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Jun. 21, 2021, PCT No. PCT/JP2021/023368
§ 371(c)(1), (2) Date Nov. 30, 2022,
PCT Pub. No. WO2021/261431, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 2020-110413 (JP), filed on Jun. 26, 2020.
Prior Publication US 2023/0228421 A1, Jul. 20, 2023
Int. Cl. F23R 3/00 (2006.01); F02C 7/22 (2006.01); F23R 3/16 (2006.01); F23R 3/28 (2006.01); F23R 3/32 (2006.01)
CPC F23R 3/286 (2013.01) [F02C 7/22 (2013.01); F23R 3/16 (2013.01); F23R 3/32 (2013.01); F05D 2220/32 (2013.01); F05D 2240/35 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A combustor comprising:
a fuel injector that has a body extending in an axial direction;
an outer shell; and
a combustion liner disposed inside the outer shell with a predetermined spacing in a radial direction and centered on an axis of the outer shell,
wherein the body includes:
an axial passage formed so as to extend in the axial direction;
at least one radial passage formed so as to communicate at one end with the axial passage and to open at another end to an outer surface of the body; and
an internal passage including a first opening and a second opening open to the outer surface, and formed so as to extend inside the body from the first opening to the second opening,
wherein the at least one radial passage and the internal passage do not communicate with each other in the body,
wherein the internal passage is configured to extend so as to surround the axial passage in a circumferential direction centered on an axis of the body,
wherein the first opening and the second opening are located opposite to each other across a third opening, through which the at least one radial passage opens to the outer surface, in the circumferential direction centered on the axis of the body,
wherein air flows into the internal passage via the first opening, and the air flows out of the internal passage via the second opening,
wherein the body has a tip end portion and a base end portion,
wherein the internal passage includes a plurality of divided internal passages that do not communicate with each other in the axial direction,
wherein the plurality of divided internal passages each include a first divided opening that constitutes the first opening, and
wherein an opening area of the first divided opening of a divided internal passage located closest to the tip end portion among the plurality of divided internal passages is larger than an opening area of the first divided opening of another divided internal passage.