Burner

The utility model provides a burner. The burner comprises a burner cover, wherein a circular casing pipe is connected below the burner cover, a cylindrical mixing rod for mixing the air with fuel gas is arranged between the burner cover and the casing pipe, the air and the fuel gas are delivered through the casing pipe, a plurality of threaded grooves are formed in the cylindrical surface of the mixing rod, air holes for discharging the air are formed in surfaces of the grooves, the circular top diameter of the upper half part of the burner cover is smaller than the circular bottom diameter of the lower half part, and central holes for discharging the air are distributed in the threaded grooves of the cylindrical mixing rod. With the adoption of the burner, the air and the fuel gas can be better mixed to produce rotating mixed air flows, high-speed tornado type flames are produced, the fuel gas burns fully, the firepower is concentrated, obvious heat dissipation far away from the burner cannot be felt, the bu