Dust-free room

A dust-free room comprises a vertical curtain, an FFU fan filter unit and an ion fan. A dust-free room is located in a workshop, a vertical curtain is hung in the workshop, and the lower end of the vertical curtain extends to the bottom of the workshop; at the moment, a closed space is defined by the vertical curtain and the plant together, an FFU fan filter unit is arranged on the upper top surface of the closed space, and a circulating groove is formed in the joint of the lower end of the vertical curtain and the bottom of the plant; an ion fan is also arranged in the closed space; and underthe action of the FFU fan filter unit and the ion fan, air flow in the closed space is discharged into a workshop on the outer side of the closed space through the circulation groove, and a dust-freeclean environment is formed in the closed space. The structure is simple and flexible, the building is easy, an air conditioner is not needed, a dust-free environment can still be created, the energyconsumption is low, and th