Burner

Abstract

To provide a burner that reduces the amount of primary air while maintaining high momentum, reduces the overall weight, and is less likely to become displaced. A burner 1 includes a cylindrical body 1a, a cylindrical cavity 1b penetrating the body 1a in the axial direction, and a flow passage 1c arranged outside the cavity 1b, in which a fuel F and a primary air A1 flow through the flow passage 1c, and a secondary air A2 flows axially inside the cavity 1b and along an outer circumferential surface 1d of the body 1a. The cross section of the flow passage 1c can be ring-shaped. The burner 1 can be suspended from above and can be moved in the axial direction.

Dependencies are inferred from the claim text.