Burner with fuel and air supply incorporated in a wall of the burner

A burner of a turbomachine or a gas turbine engine, comprising:

• an upstream burner section for providing a first fuel and an oxygen containing fluid to an upstream end of a burner interior, wherein the burner interior is substantially a hollow space in which a mixing of the first fuel and the oxygen containing fluid takes place;
• a downstream burner section for providing a second fuel to a downstream end of the burner interior or to a combustion chamber;
• and
• an intermediate burner section between the upstream burner section and the downstream burner section;
• wherein the intermediate burner section comprises an annular wall surrounding a mid section of the burner interior,
• the annular wall comprising:
• an annular cooling fluid passage;
• and
• an annular fuel passage for guiding the second fuel to the downstream burner section, the annular fuel passage being more distant to the burner interior than the annular cooling fluid passage,
• wherein the upstream burner section comprises at least one integrated fuel tube through a body of the upstream burner section, that is configured to feed the annular fuel passage, and
• wherein the annular wall further comprises a plurality of film cooling holes that pierce the annular wall from an exterior of the burner to the mid section of the burner interior, the plurality of film cooling holes piercing the annular cooling fluid passage and piercing the annular fuel passage but being fluidically separate from the annular cooling fluid passage and from the annular fuel passage.

A burner of a turbomachine or a gas turbine engine, comprising:

• an upstream burner section for providing a first fuel and an oxygen containing fluid to an upstream end of a burner interior, wherein the burner interior is substantially a hollow space in which a mixing of the first fuel and the oxygen containing fluid takes place;
• a downstream burner section for providing a second fuel to a downstream end of the burner interior or to a combustion chamber;
• and
• an intermediate burner section between the upstream burner section and the downstream burner section;
• wherein the intermediate burner section comprises an annular wall surrounding a mid section of the burner interior, the annular wall comprising:
• an annular cooling fluid passage;
• and
• an annular fuel passage for guiding the second fuel to the downstream burner section, the annular fuel passage being more distant to the burner interior than the annular cooling fluid passage,
• wherein the upstream burner section comprises at least one integrated fuel tube through a body of the upstream burner section, that is configured to feed the annular fuel passage, and
• wherein the annular wall further comprises at least one cooling fluid inlet hole providing the annular cooling fluid passage with cooling fluid from an exterior of the burner, the at least one cooling fluid inlet hole piercing the annular fuel passage but being fluidically separate from the annular fuel passage.