When the diffuser is horizontally fed, it should be arranged symmetrically or in a plum blossom pattern, and the distance between the center of the diffuser and the side wall should not be less than 1000mm; when the diffuser is arranged in a circular or square shape, the length and width of the corresponding air supply range (area) The ratio should not be greater than 1:1.5, and the ratio of the horizontal range of the air supply to the vertical range (the distance from the flat top to the upper boundary of the working area) should be kept between 0.5 and 1.5. In fact, it depends on the decoration requirements, such as 250*250 diffusers, the spacing is generally about 3.5 meters, 320*320 about 4.2 meters.