Cooking fume recirculation type energy-saving gas stove

The invention provides a cooking fume recirculation type energy-saving gas stove. The cooking fume recirculation type energy-saving gas stove comprises a stove base, a combustor, a range hood, a negative-pressure pump, an automatic cooking fume detection and control valve and a safety valve. The stove base is of a cylindrical structure. The upper portion of the stove base is of a downward-concavespherical surface structure, and the downward-concave spherical surface is coated with a radiative heat-dissipation paint coating. A hollow annular heat insulation layer is arranged on the stove base.The combustor is arranged at the center of the downward-concave spherical surface, and the lower portion of the combustor is connected with a gas and air premixing pipeline. A spiral preheating pipeis wound outside the gas and air premixing pipeline. One end of the preheating pipe is connected with the negative-pressure pump, and the other end of the preheating pipe is connected with the hollowannular heat insulation laye