Dual-square-shaped uniform-section flow rectifier for square column wall face attached-type air supply

The present invention discloses a dual-square-shaped uniform-section flow rectifier for square column wall face attached-type air supply. The flow rectifier comprises an air inlet pipe and a housing, the housing is a dual-square-shaped tube body with the upper end being sealed, four sides of the tube body are equal in length, the housing sleeves a square column, an inner wall of an inner tube of the housing attaches closely to an outer wall of the square column, a central axis of the air inlet pipe is perpendicular to that of the housing, and 2-6 dual-square-shaped partition plates are horizontally arranged in an axial direction of the housing in the housing and are alternately arranged from top to bottom on an inner wall of an outer tube and an outer wall of the inner tube of the housing, thereby forming a passage whose cross section alternately enlarges and narrows in the axial direction of the hosing in the housing. With adoption of the flow rectifier provided by the present invention, outlet air uniform effects of a dual-square-shaped slot air outlet are raised, the air outlet is vertically downwards, the outlet air hardly mix with the ambient air, effectiveness of square column face attached-type air supply is raised, and the flow rectifier is applicable to large-space buildings and is not restricted in application.