Why are fabric ducts widely used in villas?

With the passage of time, people's requirements for the cleanliness of fabric ducts and air ducts and the requirements for saving equipment and materials have also gradually improved. Existing fabric air ducts and spiral circular air ducts are widely used, which meet the functional requirements of ventilation, air conditioning and dust removal. The fabric air duct is mainly used to connect the air circulation between the two places and has the effect of ventilation. The reasons for its wide application in villas are as follows: 1. The production of the accessories of the standardized air duct has been automated and systematic, and With industrial quality control, the wind resistance of circular ducts is much smaller than that of rectangular ducts. 2. Convenient installation of fabric air duct The air duct reduces the connection points between the pipes and reduces the leakage of the joint of the pipe fittings. The typical length of the air duct is 3~6m, while the length of the typical rectangular air duct is only 1 ~1.5m; and only one fitting is required to connect two air ducts, while the connection of traditional rectangular air ducts often requires a double flange system. 3. Small installation space In the case of not increasing the pressure drop, a circular pipe with a diameter of 200mm in the same installation space can replace a 250×150mm rectangular pipe. On the premise of not increasing the rated installation space, several parallel circular pipes can replace the flat rectangular pipes. For the same pressure characteristics, the installation space of several circular pipes is often the same or less than that of a rectangular pipe. Many rectangular piping systems require a 4-bolt system when installed, thus adding 40 to 80 mm in all directions of the piping. 4. The ingenious rib-limiting process of the sealing ring leak-proof system makes the air duct have the strength to withstand pressure. After adding the rib, the thickness of the bite seam is four times that of the pipe body, the rigidity of the pipe is large, and the pressure load can be accepted. It is not deformed; the pipeline layout is beautiful and the three-dimensional sense is strong. When ducting is exposed as an architectural feature, the beautiful and elegant threaded duct will be the ideal choice. At present, the metal air duct methods used in air conditioning and ventilation projects mainly include: circular air duct, fabric air duct and air duct. The circular air duct has high strength and few consumables, but the processing technology is more complicated and takes up a lot of space; the fabric air duct is easy to arrange and simple to process, so it is more commonly used. There is also a mechanized production that is made of spirally wound steel strips, with round and rectangular shapes. In order to save space, many fabric ducts and ducts are made into flat circles. Poor durability of fabric ducts and ducts The ratio of magnesium chloride and magnesium oxide gram molecular weight is scientifically based, and the dosage of magnesium chloride should be determined according to the determination of the active magnesium content of magnesium oxide. However, the manufacturer of unqualified products does not know the determination of the active magnesium content of magnesium oxide, nor the reasonable value of the molar ratio. I only know that magnesium oxide is added with brine, and it becomes an air duct after curing. The air duct has a large amount of chloride ions left, and it is easy to return to halogen in the humid air environment, the softening coefficient is low, and the service life is short. The fabric air duct and air duct market are generally divided into three categories according to the raw materials: galvanized fabric air duct air duct, fabric air duct fabric air duct air duct and composite fabric air duct air duct. At present, the widely used fabric air ducts on the market are galvanized sheets. Galvanized sheet fabric ducts are basically the characteristics of fabric ducts and fabric ducts, but the price may be lower than two-thirds of the fabric ducts. Composite fabric air ducts are generally used in places where the external environment is relatively general and the requirements for air ducts are not too high. In humid air, a dense basic zinc carbonate film will be formed on the surface of zinc. The fabric air duct is mainly coated with a layer of zinc on the iron sheet of the air duct, which has a protective effect on the iron sheet. After the zinc coating is passivated, dyed or coated with a light protectant, its protective and decorative properties can be improved. On the surface of the fabric air duct, there is generally a layer of electroplating, mainly zinc, which mainly plays the role of protecting the iron sheet, generally we call it zinc coating. After this layer of galvanized layer is formed, passivation treatment and dyeing are generally required, or a light protector is applied, which can improve the protection of the galvanized layer and also has a decorative effect.

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