Patent ID: 11873993
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. A combustor comprising:
a liner defining a combustion chamber;
an air and fuel mixing body received within said liner and upstream of the combustion chamber;
the mixing body has a center axis and includes a bluff-body;
a plurality of fuel injection ports on the bluff-body and communicating with a central fuel supply such that fuel passes into a mixing chamber with a component in an axially downstream direction and a radially outward direction relative to said central axis;
a plurality of inner air swirlers providing air into the mixing chamber with a component in an axially downstream direction, a radially outward direction, and with a circumferential component due to swirler structure;
the fuel injection ports being downstream of an outlet of the inner air swirler
wherein a plurality of outer air swirlers delivers air into the combustion chamber, and downstream of the mixing chamber;
wherein air is delivered downstream of the plurality of outer air swirlers with a component in an axially downstream direction, a radially inward direction and with a circumferential component due to swirler structure;
the inner air swirlers are outwardly angularly offset from the center axis and are configured to achieve the radially outward component and the axially downstream component for a majority of the air exiting the inner air swirlers; and
the outer air swirlers are inwardly angularly offset from the center axis and are configured to achieve the axially downstream component and the radially inward component for a majority of the air exiting the outer air swirlers.