Premixing combustion device

The invention relates to a premixed combustion device, which comprises a mixing tank body which comprises a feeding hole, a gas inlet and a gas outlet and is used for mixing fuel to be mixed with premixed gas to form a mixed gas material; the fuel feeding mechanism is connected with the feeding hole of the mixing tank body and is used for injecting to-be-mixed fuel into the mixing tank body; the gas feeding mechanism is connected with the gas inlet of the mixing tank body and is used for introducing premixed gas into the mixing tank body; the first temperature control mechanism is used for controlling the temperature of the mixed gas material in the mixing tank body; and the combustor is connected with the gas material outlet of the mixing tank body and is used for mixing fuel of the mixed gas material in the mixing tank body. By means of the technical scheme, the premixing combustion device can provide a steady laminar flow combustion process, the air-fuel ratio can be adjusted within a wide range, and the r