Patent ID: 9593852
Date: 2017-03-14
CPC Classifications: F02C,F23R,Y02T

Claim:
1. A combustion burner comprising: a fuel nozzle; a burner tube that surrounds the fuel nozzle to form an air passage between the burner tube and the fuel nozzle; a plurality of swirler vanes being arranged in a plurality of positions in a circumferential direction on an external circumferential surface of the fuel nozzle, each of which extends along an axial direction of the fuel nozzle, and gradually curves from upstream to downstream so as to swirl air flowing in the air passage from the upstream to the downstream; a liquid fuel injecting hole that is formed on the fuel nozzle and is configured to inject a liquid fuel to a vane pressure surface of each of the plurality of swirler vanes; a static mixer disposed in the fuel nozzle and configured to mix water and the liquid fuel evenly to prepare a mixed fuel; and a cooling unit that is configured to cool a part of the vane pressure surface on which the liquid fuel hits; wherein the cooling unit injects the mixed fuel from the liquid fuel injecting hole to the vane pressure surface of each of the plurality of swirler vanes.