Flame retardant grade requirements for indoor ventilation ducts

The airflow organization of the air conditioning area (also known as the air distribution system, which is a brand-new ventilation duct) refers to the reasonable arrangement of the air supply and return air outlets, so that the purified, heat and moisture treated air is sent to the air conditioner from the air supply outlet After the zone, in the process of heat and moisture exchange with the air in the air-conditioning zone, mixing, diffusing or replacing, the residual heat and residual humidity in the air-conditioning zone are evenly eliminated, so that the air-conditioning zone (usually refers to the height below 2m from the ground) A relatively uniform and stable temperature, humidity, airflow velocity and cleanliness are formed in the space (Jiutian series air duct system can be removed and washed at any time) to meet the requirements of production technology and human comfort. At the same time, there must be a return air vent to remove the air in the air-conditioning area, or return most of the return air to the air conditioning unit, with a small part exhausted to the outside. Or if the air conditioning unit is running with fresh air, most of the return air will be exhausted to the outside. Flame retardant products and components in public places are divided into 6 categories. Among them, the combustion-supporting fabrics are divided into 2 levels according to the combustion performance: first-class non-washable flame-retardant fabric: flame-retardant 1 (fabric non-washable); second-level washable resistance Flame-retardant fabric: Class 2 flame-retardant (the fabric is resistant to washing 30 times); Class 2 washable and flame-retardant fabric: Class 2 flame-retardant (the fabric is resistant to dry cleaning 6 times). Ordinary fiber + post-fire retardant immersion coating treatment, the cost is lower, the fire resistance performance decreases after single and multiple washings, the general life span is 3 to 5 years, and the good life span is 5 to 10 years. Most other domestic manufacturers use this fiber fabric. Jiutian cloth ducts are different from ordinary fibers and post-fire-treated fibers. The Jiutian system made of permanent flame-retardant fibers has obtained the B1 certification of various air supply mode fibers of the National Fire Protection Building Materials Supervision and Inspection Center and the combustion performance B (B- s1, d0, t1) type inspection report, this is currently the only air distribution system product in China's air distribution pipe industry that has passed multiple international and domestic certifications, and its fire protection quality life can be guaranteed to be more than 15 years. Jiutian cloth duct has the industry's largest flexible production line system for laser cutting and perforation, which makes the processing quality of Jiutian system reach the international top technical level. After all finished pipes are processed, the Jiutian system air distribution pipe system will be fully tested on a set of system testing platform that simulates the design requirements in the factory, which can truly ensure that the finished air distribution pipes are error-free. Including: the appearance, size and quantity of the system are inspected, and the air supply test of the system is carried out.

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