Combustor and gas turbine including the same

A combustor comprising:

• a plurality of burners spaced apart from each other along an imaginary circle, each of the plurality of burners comprising a plurality of nozzles to mix and inject fuel and compressed air;
• a plurality of liners, each of which is coupled to one end of an associated one of the plurality of burners so that the compressed air and fuel injected from each associated burner are combusted inside each associated liner;
• and
• a transition piece coupled to an outlet of each of the plurality of liners, to which high-pressure gas in each of the plurality of liner flows, the high-pressure gas being delivered to a turbine,
• wherein each of the plurality of nozzles has an outlet at on flat outlet side of a nozzle casing, the plurality of nozzles comprise:
• a central nozzle disposed at the center of each of the plurality of burners and extending in parallel with an extension direction of the nozzle casing;
• and
• a plurality of main nozzles including a first set of main nozzles, each arranged to be inclined with respect to the extension direction of the central nozzle while surrounding the central nozzle so that an inlet side and an outlet side of the first set of main nozzles are inclined,
• the flat outlet side of the nozzle casing having a central outlet for the central nozzle and main outlets around the central outlet for the plurality of main nozzles, and
• wherein the plurality of main nozzles include the inclined first set of main nozzles, each having a center axis inclined with respect to the extension direction and a second set of main nozzles, each having the center axis parallel to the extension direction, each inclined main nozzle and each parallel main nozzle being alternately arranged.

A combustor comprising:

• a cylindrical casing having a flat inlet side and a flat outlet side, the flat outlet side having a central outlet for a central nozzle and additional outlets around the central outlet for a plurality of additional nozzles, the central and additional outlets facing into a combustion chamber of a turbine;
• the central nozzle located within the cylindrical casing and aligned towards the combustion chamber along a central axis of the central nozzle;
• and
• the plurality of additional nozzles located within the cylindrical casing and arranged in a radial manner around the central nozzle, the plurality of additional nozzles including a first set of additional nozzles, each being directed towards the central axis at a first angle so that an inlet side and an outlet side of the first set of additional nozzles are inclined,
• wherein the plurality of additional nozzles include the inclined first set of additional nozzles, each having a central axis inclined with respect to the central axis of the central nozzle and a second set of additional nozzles, each having the central axis concentric with the central axis of the central nozzle, each inclined additional nozzle and each parallel additional nozzle being alternately arranged.