Burner, combustor including same, and gas turbine

A burner, comprising:

• a mixing tube extending inside a fuel plenum along an axis of the burner and having an interior configured to be supplied with an air defining an upstream direction and a downstream direction, the mixing tube having an inlet through which the air is introduced into the mixing tube;
• an upstream plate and a downstream plate defining the fuel plenum;
• a plurality of nozzle members supported by the upstream plate so as to be at least partially disposed axially upstream of the mixing tube, the plurality of nozzle members each forming a respective upstream space communicating with the fuel plenum;
• and
• a plurality of fuel injection holes for injecting a fuel from the fuel plenum into the interior of the mixing tube, each of the plurality of fuel injection holes being disposed on a respective one of the plurality of nozzle members,
• wherein each of the plurality of fuel injection holes is disposed axially upstream of the upstream plate and axially upstream of the inlet of the mixing tube,
• wherein each of the plurality of nozzle members includes:
• a cylindrical portion disposed axially upstream of the upstream plate;
• and
• a bottom portion closing an axially upstream end of the cylindrical portion, and
• wherein for each of the plurality of nozzle members, an inner peripheral wall surface of the cylindrical portion and an axially downstream wall surface of the bottom portion together form the respective upstream space.