The invention discloses a decoupling
gas burner, and belongs to the technical field of
combustion equipment. The decoupling
gas burner comprises an outer cylinder body, a separation cylinder body, a gas outer cylinder body and a gas inner cylinder body which are sequentially arranged from outside to inside and coaxial, a first-stage air duct is formed in the gas inner cylinder body, a gas channelis formed between the gas inner cylinder body and the gas outer cylinder body, a second-stage air duct is formed between the gas outer cylinder body and the separation cylinder body, a third-stage airduct is formed between the separation cylinder body and the outer cylinder body, the decoupling burner further comprises a
frustum-shaped cylinder body, the small-
diameter end of the
frustum-shaped cylinder body is connected to the end, which extends into a
hearth, of the separation cylinder body, the outer
diameter of the large-
diameter end of the
frustum-shaped cylinder body is smaller than theinner diameter of the outer cylinder body, and in the axial direction of the frustum-shaped cylinder body, the distance between the end, which extents into the
hearth, of the outer cylinder body andthe large-diameter end of the frustum-shaped cylinder body is adjustable. According to the provided decoupling
gas burner, the frustum-shaped cylinder body is arranged so that the decoupling gas burner can be suitable for different gas and
hearth structures.