Patent ID: 11892162
Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 1:
2. A premixed combustion burner comprising:
a mixing part that includes a first peripheral wall having a burner axis as a center thereof, that includes a mixing region for mixing gas fuel and air at an inner periphery of the first peripheral wall, and that includes a plurality of air supply ports arranged in a circumferential direction and open in the first peripheral wall;
a nozzle part that is on a leading end side of the mixing part, that includes a second peripheral wall having the burner axis as a center thereof, that includes a premixed gas passage continuous to the mixing region at an inner periphery of the second peripheral wall, and that includes a cooling passage in the second peripheral wall; and
a header part that is on a proximal end side of the mixing part, and that has therein a first header chamber, a fuel supply port configured to supply the gas fuel to the first header chamber, a second header chamber, and a fuel ejection port that allows communication between the second header chamber and the mixing region, wherein
the first peripheral wall has therein an outward path that connects the first header chamber and an inlet of the cooling passage, and a return path that connects an outlet of the cooling passage and the second header chamber, and
the mixing part includes a plurality of sets of the outward path and the return path extending in an axial direction of the burner axis, and the outward paths and the return paths are alternately arranged in the circumferential direction of the mixing part.