Self-air-entraining jet mechanism for axial fan/compressor

The invention discloses a self-air-entraining jet mechanism for an axial fan/ compressor, and relates to the technology of combustion turbines. According to the self-air-entraining jet mechanism for the axial fan/compressor, diffusion deceleration is achieved by adopting an increasing pipe as an outlet at the rear stage of the axial fan/compressor, and the flow loss is reduced; and the air inlet nozzle end adopts a Laval nozzle to achieve the purposes of acceleration and decompression, so that the momentum of the outlet of the air inlet nozzle is maximized and the purpose of improving the stability margin is achieved to the largest extent. When the self-air-entraining jet mechanism for the axial fan/compressor is in operation, gas at the rear stage is guided into the top area of a movable vane at the front stage to be jetted, so that the purposes of improving the stall speed and increasing the stability margin are achieved, and therefore the axial fan/compressor can run under the working conditions of higher pressure ratio and wide stall margin.