The flange machine adopts smooth air duct material

During installation, due to changes in materials, installation and connection methods, the actual resistance and design resistance will be different, so a certain safety factor should be considered when selecting fans and motors; To avoid conflicts between air duct and pipeline or other building facilities, smooth transition shall be adopted when unavoidable, and the length diameter ratio of transition section shall be greater than 3

If the wind speed in the air duct is high, the air duct section is small, which saves air duct materials and occupies less building space. However, if the wind speed is high, the system resistance is high, the fan pressure is high, the power consumption is high, and the noise becomes loud. If a lower wind speed is used, the opposite will happen. Therefore, there must be an economic wind speed value among the wind speed values.

At present, spiral air duct is widely used in ventilation engineering. Its appearance quality is very high. The inner wall of the formed air duct is lubricated and the outer wall is smooth; As the spiral ribs formed by the occlusion of the outer wall are evenly distributed, the effect as a common reinforcing rib is stronger than that of the popular occluded air duct.

As it is machined, it can reduce the remuneration and operation error, ensure the air duct is tight, and the air leakage is far less than the current standard and specified value; As the strength of spiral air duct unit is larger than that of ordinary air duct, the thickness of coil used for air duct of the same specification can be reduced by one model, and the section length of air duct is larger than that of ordinary air duct. The number of pipe segments with the same length is significantly reduced. In addition, using non blue connection can reduce a lot of original data.