A burner component of a burner. The burner has a flow channel, in which combustion air flows in a flow direction from upstream to downstream. The burner component includes a wall portion, which adjoins the flow channel; a plurality of injection nozzles, which are arranged in the wall portion; and a plurality of vortex generators, which are arranged on the wall portion. The vortex generators have a concavely curved sloped surface rising in the flow direction to improve the distribution of the fuel in the combustion air.

A cooling channel structure including a first wall section extending along a first direction, a second wall section disposed at an interval from the first wall section in a second direction orthogonal to the first direction, and a plurality of partition wall sections connecting the first wall section and the second wall section so as to form at least one cooling channel between the first wall section and the second wall section. The cooling channel having a plurality of channel cross-sections disposed at intervals in the first direction. In a cross-section including the first direction and the second direction, the first wall section includes a thin portion having a thickness smaller than a thickness t1 of the first wall section at a position away from each of the partition wall sections in the first direction.

A cooling channel structure including a first wall section extending along a first direction, a second wall section disposed at an interval from the first wall section in a second direction orthogonal to the first direction, and a plurality of partition wall sections connecting the first wall section and the second wall section so as to form at least one cooling channel between the first wall section and the second wall section. The cooling channel having a plurality of channel cross-sections disposed at intervals in the first direction. In a cross-section including the first direction and the second direction, the first wall section includes a thin portion having a thickness smaller than a thickness t1 of the first wall section at a position away from each of the partition wall sections in the first direction.

A gas turbine combustor according to at least one embodiment of the present disclosure includes a first burner with a plurality of first nozzles disposed along an inner circumference of a cylindrical combustion tube, and a second nozzle surrounded by the plurality of first nozzles. The second nozzle has a fuel injection hole capable of injecting fuel. A distance between a centroid of the fuel injection hole and an outer peripheral edge of the fuel injection hole as viewed from an axial direction of the combustion tube differs depending on a position of the outer peripheral edge in a circumferential direction of the combustion tube.

An exhaust-gas burner for an exhaust-gas system of a motor vehicle includes a combustion chamber, which is surrounded by an outer wall, for a channel section in an exhaust-gas system. A dosing unit is provided for the controlled feed of a fuel into the combustion chamber. An ignition unit is provided for the ignition of a combustible mixture in the combustion chamber. A cooling circuit is provided for the exchange of heat with the dosing unit, and is arranged within the outer wall of the exhaust-gas burner.

A nozzle includes a nozzle body defining a longitudinal axis. The nozzle body has an air passage, a fuel circuit radially outboard from the air passage with respect to the longitudinal axis, and a cooling circuit. The fuel circuit extends from a fuel circuit inlet to a fuel circuit annular outlet. The fuel circuit is defined between a fuel circuit inner wall and a fuel circuit outer wall. At least a portion of the fuel circuit outer wall is radially outboard from the fuel circuit inner wall with respect to the longitudinal axis. A cooling circuit is defined within at least one of the fuel circuit inner wall or the fuel circuit outer wall. The cooling circuit extends from an axial position proximate the fuel circuit inlet to an axial position proximate the fuel circuit outlet.

A nozzle includes a nozzle body defining a longitudinal axis. The nozzle body has an air passage, a fuel circuit radially outboard from the air passage with respect to the longitudinal axis, and a cooling circuit. The fuel circuit extends from a fuel circuit inlet to a fuel circuit annular outlet. The fuel circuit is defined between a fuel circuit inner wall and a fuel circuit outer wall. At least a portion of the fuel circuit outer wall is radially outboard from the fuel circuit inner wall with respect to the longitudinal axis. A cooling circuit is defined within at least one of the fuel circuit inner wall or the fuel circuit outer wall. The cooling circuit extends from an axial position proximate the fuel circuit inlet to an axial position proximate the fuel circuit outlet.

A spacer for a fluid nozzle can include a body configured to fit within a sheath of the fluid nozzle such that a fluid tube positioned within the sheath is held bent over its longitudinal dimension by the body thereby altering a natural frequency of the fuel tube compared to if the fuel tube were not held bent.

The present invention is a combustion strategy using a swirl burner tip, which is one of stoichiometric mixture of reactants (2H.sub.2+O.sub.2.fwdarw.2H.sub.2O) with added high quality dry steam (H.sub.2O (g)) as a thermal diluent. The amount of dry steam can be determined by the safety requirements of the reactants and the desired temperature of post-flame gases. It can be appreciated that the design of the swirl burner tip is for safe handling of the reactants, and for rapid and thorough mixing of the reactants so combustion occurs in a nearly premixed configuration exterior of the swirl burner tip. The H.sub.2/O.sub.2 ratio is fixed to consume all H.sub.2 and O.sub.2 (stoichiometric), with dry steam (H.sub.2O (g)) strategically added to the reactants. The burner tip is configured to create counter swirling reactant flows separate from each other.

The present invention is a combustion strategy using a swirl burner tip, which is one of stoichiometric mixture of reactants (2H.sub.2+O.sub.2.fwdarw.2H.sub.2O) with added high quality dry steam (H.sub.2O (g)) as a thermal diluent. The amount of dry steam can be determined by the safety requirements of the reactants and the desired temperature of post-flame gases. It can be appreciated that the design of the swirl burner tip is for safe handling of the reactants, and for rapid and thorough mixing of the reactants so combustion occurs in a nearly premixed configuration exterior of the swirl burner tip. The H.sub.2/O.sub.2 ratio is fixed to consume all H.sub.2 and O.sub.2 (stoichiometric), with dry steam (H.sub.2O (g)) strategically added to the reactants. The burner tip is configured to create counter swirling reactant flows separate from each other.