The Air shower is a supporting device for the clean workshops and the assembly clean room, is used to blow the dusts attached to the surfaces of the people and objects entering the clean workshop, and also functions as an air brake to prevent non-purified air from entering the clean area. The Air Shower system controls the sequential locking and release of the doors, and controls the Blower. The two doors are interlocked such that two doors cannot be open at the same time, to prevent pressure losses and cross contamination.