Fan and turbine integrated structure and engine

The invention discloses a fan and turbine integrated structure which comprises a fan, a turbine disc and a turbine. The fan is composed of a fan disc and a plurality of fan blades, and the fan blades are distributed along the periphery of the fan disc at equal intervals. The turbine disc is arranged on the periphery of the fan and is connected with the fan blades; the turbine is installed on the periphery of the turbine disc. According to the turbofan engine, the fan and the turbine are integrated, and the turbine part needing high tangential speed and the main combustion chamber needing large space are arranged on the outer side of the fan, so that compared with a same-magnitude turbofan engine, the axial length of the whole engine is shortened, and the thrust of the turbofan engine is equivalent to that of the same-magnitude turbofan engine; moreover, the fan and the turbine are integrally formed, and the periphery of the fan serves as a turbine disc for mounting turbine blades, so that compared with a turb