Outward turning expander structure

An outward-turning expander structure at least comprises an outward-turning turbine, a main shaft, an outer cover and a sealing shell. There is a flow field provided in the inner center of the outward-turning turbine, and a plurality of flow guide blocks are provided evenly around the flow field. The main shaft is arranged in the outward-turning turbine, and the same number of multiple air inlet channels and multiple air outlet channels are evenly distributed inside the main shaft. The outer cover is sealed at both sides of the outward-turning turbine, the sealing shell is covered on the outside of the outward-turning turbine and the outer cover. The peripheral of the sealing shell is provided with a wire groove, and a coil is wound on the wire groove. The external air can be introduced into the flow field through each of the air inlet channels, and impact each of the flow guide blocks in the flow field, thereby generating power to push the outward-turning turbine and to promote the rotation of the outward-tu