Spiral duct machine standard
Apr 10, 2022
When designing the spiral duct, according to conditions such as noise, material, energy consumption, installation space, wind speed within the allowable range, etc.; avoid sudden changes in wind speed and wind direction; the directional air duct is designed to be square, and the aspect ratio does not exceed 8:1, generally speaking , it should be controlled within 4:1;
The spiral tube should be made of smooth air tube; differences in actual resistance and design resistance can be caused due to changes in material and installation during installation. Therefore, when choosing fans and motors, a certain safety factor should be considered; avoid conflicts between ducts or other building facilities. If you are unavoidable, use smooth transitions. The length of the length should be greater than 3,
When the wind speed in the air duct is large, the air duct is small, and the air duct is rescued, and the construction space is small. 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 increases. The opposite of the above occurs if lower wind speeds are used. Therefore, in the wind speed value, there must be an economic wind speed value.
Currently, spiral dirt is widely used in ventilation projects. Their appearance is of high quality. The inner wall lubricates the inner wall of the molded airway, and the outer wall is smooth; the spiral distribution formed by the bite of the outer wall is uniform, so the normal reinforcing rib is stronger than the popular bite tube.
Since it is machined, it can reduce pay and operating errors, and ensure that the wind is strict, and the air leakage is much smaller than the current standard and specified value; the strength of the coil exhaust unit is larger, and the thickness of the coil in the same size model is reduced, the wind The length of the tube is greater than that of a conventional air tube. The number of pipe sections of the same length is significantly reduced. Also, there is a non-flanged connection to reduce a lot of raw data.
