Mitsubishi Hitachi Power Systems, Ltd.

Kazuaki Hashiguchi

Atsushi Yuasa

Hideyuki Hamaya

Yoshiaki Arakawa

Shogo Sawa

Keiji Takeno

Akiyasu Okamoto

Takahiro Jojima

Hideta Ogawa

In a burner tip, combustion burner, and boiler, the burner tip is provided with: a mixing chamber provided at an inner portion of the tip body; a plurality of first mixed fluid jet holes of which base end portions communicate with the mixing chamber, of which front end portions open on a lateral side of the tip body, and which are placed in circumferential direction of the tip body at predetermined intervals; a fluid fuel supply passage configured to supply a fluid fuel to the mixing chamber; and an atomizing medium supply passage configured to supply an atomizing medium to the mixing chamber, thereby, combustibility is improved by facilitating the mixing of a fluid fuel and an atomizing medium and thus making the size of liquid fuel droplets smaller.

Burner tip, combustion burner, and boiler

A combustion burner for a boiler includes: an inner cylinder defining a fuel supply passage for supplying fuel; an outer cylinder surrounding the inner cylinder and defining an air supply passage between the inner cylinder and the outer cylinder; and a swirler in the air supply passage, the swirler being configured to swirl air in the air supply passage. The swirler includes a plurality of blades radially disposed between the inner cylinder and the outer cylinder, the plurality of blades extending from an air-supply side toward a combustion-space side of the air supply passage, and each of the plurality of blades having, at least on an inner cylinder side of the blade, a section with a thickness varied in a burner axial direction, the thickness being smaller at an edge portion on the combustion-space side than at a maximum-thickness section of the blade.

Combustion burner for boiler

Growing community of inventors

Tokyo, Japan

Kazuaki Hashiguchi