Combustor cap assembly

A combustor, comprising:

• a. a shroud that extends circumferentially inside the combustor, wherein the shroud defines at least one inlet passage;
• b. a first plate that extends radially inside the shroud downstream from the at least one inlet passage, wherein the first plate defines at least one inlet port, at least one outlet port and at least one fuel nozzle passage;
• c. a second plate that extends radially around the first plate downstream from the at least one inlet port and upstream from the at least one outlet port;
• d. a sleeve at least partially surrounded by the shroud and that extends radially around the at least one fuel nozzle passage, wherein the sleeve extends from the first plate radially outward from the at least one fuel nozzle passage;
• e. a tube that extends through the at least one fuel nozzle passage, wherein the tube, the sleeve, and the first plate at least partially define an outlet passage;
• f. an inlet plenum inside the shroud and at least partially defined by the shroud, the first plate and the sleeve;
• and
• g. an outlet plenum downstream from the inlet plenum and at least partially defined by the sleeve, the first plate and the tube.

A combustor, comprising:

• a. a shroud that extends circumferentially inside the combustor, wherein the shroud defines at least one inlet passage;
• b. a first plate that extends radially inside the shroud downstream from the at least one inlet passage, wherein the first plate defines at least one inlet port, at least one outlet port and at least one fuel nozzle passage;
• c. a second plate that extends radially around the first plate downstream from the at least one inlet port and upstream from the at least one outlet port;
• d. a sleeve at least partially surrounded by the shroud and that extends radially around the at least one fuel nozzle passage, wherein the sleeve extends from the first plate radially outward from the at least one fuel nozzle passage;
• e. a first fluid flow path at least partially defined by the at least one inlet passage, the shroud, the sleeve and the at least one inlet port;
• f. a tube at least partially surrounded by the sleeve and that extends through the at least one fuel nozzle passage;
• and
• g. a second fluid flow path at least partially defined by the at least one outlet port, the sleeve and the tube, wherein the second fluid flow path flows in an opposite and generally parallel direction to the first fluid flow path.