Combustor

摘要

A highly-reliable combustor is provided that allows flash back of flame into a premixer to be suppressed.;The combustor has a mixing chamber forming member 110 that forms a mixing chamber thereinside. The mixing chamber includes a first mixing chamber 200 broadening toward a downstream side. The member 110 includes air introduction holes 202, 203, 204 formed in a plurality of rows in an axial direction, with the air introduction holes being arranged plurally in a circumferential direction of the mixing chamber. The member 110 includes a fuel ejection hole 206 provided in a wall surface which forms the air introduction hole. The air introduction holes 202, 203, 204 are circumferentially eccentrically installed. The air introduction holes 202 located in the most upstream row are more inclined toward the downstream side than the air introduction holes 203, 204 located in the rows other than the most upstream row.

主权项

1. A combustor comprising:
a mixing chamber forming member that forms a mixing chamber inside thereof; a first mixing chamber defined in the mixing chamber, the first mixing chamber broadening toward a downstream side; the mixing chamber forming member including air introduction holes formed in a plurality of rows in an axial direction, with the air introduction holes being arranged plurally in a circumferential direction of the mixing chamber; and the mixing chamber forming member including a fuel ejection hole, the fuel ejection hole being provided in a wall surface which forms the air introduction hole, a fuel nozzle located about a central axis of the burner, wherein the first mixing chamber has a conical shape broadening from the fuel ejection hole, and wherein the combustor has a cylindrical second mixing chamber located downstream of the first mixing chamber; wherein
the air introduction holes are circumferentially eccentrically provided, and wherein the air introduction holes located in a most upstream row are more inclined toward the downstream side than the air introduction holes located in a row other than the most upstream row.