Fabric duct ventilation duct manufacturers introduce the effect of ventilation ducts

How does the ventilation duct work? The following is a detailed introduction from the manufacturers of fabric air duct ventilation ducts, fabric air duct ventilation ducts, and fabric air duct ventilation ducts: the use of wind flame retardant plexiglass pipes has a good automatic fire extinguishing effect, but it still cannot solve the problem of fire prevention. Especially in fires, the burning of plexiglass releases more harmful toxic gases. To this end, the former Ministry of Chemical Industry issued a ban on the use of plexiglass. In the past, some projects used polystyrene or polyurethane foam insulation material, once exposed to fire, the consequences would be disastrous. For this reason, the GMP standard of the State Drug Administration prohibits the use of polyurethane sandwich panels as ventilation pipes. Kitchen smoke needs to be installed with a ventilator. What are the common ventilators? The axial flow fan used in the past is rarely used due to its low price, low total pressure, and loud secondary motor noise. The full pressure is installed in the fan box, the air volume is adjustable, and the noise is low. It is often used in kitchen fume extraction systems, and there is a certain distance from the fume extraction box to the fume exhaust port. The total pressure and the air volume of the centrifugal fan are adjustable, but noise reduction is often required due to the loud noise. If the kitchen is located at the bottom of the building, its exhaust fan should be placed on the roof. On the one hand, it can reduce indoor noise pollution, and at the same time, the exhaust pipe is in a negative pressure state to avoid odor overflow. Adhesives, sealing tapes, reinforced polyester films, flame-retardant fiberglass cloth, coatings, etc. in some of the above ventilation ducts, for flammable materials or materials with lower fire rating, will reduce the fire performance of the actual ventilation ducts. Of course, the flame-retardant polyurethane material should be replaced by a non-combustible material. The research on the above auxiliary materials should be strengthened to ensure their fire protection requirements, so as to ensure the fire performance of ventilation pipes. The ventilation pipe products have good matching performance and high standardization. There should be corresponding auxiliary equipment on the job site, such as ladders, erection, safety protection, fire-fighting facilities, etc., and technical personnel should be skilled in operation, and the quality and safety should be disclosed. The use of airtightness is good, which can fully satisfy the role of the pipeline as ventilation. For engineering equipment and equipment with less capital investment, the use of airtightness is poor and the cleaning is more convenient. Therefore, ventilation pipes have been widely used. The company's product quality and guarantee should be taken into consideration when choosing a ventilation pipe, because as long as a good ventilation pipe manufacturer is selected, good product quality can be obtained, and ventilation can be better played in use. Therefore, the ventilation pipeline should be carefully selected, and high-quality products should be selected to achieve better results in the future. What is the reason for the poor smoke exhaust pipe? After a range hood is used for a period of time, some parts, such as the impeller and the flue of the exhaust fan, will stick to a large amount of grease, which increases the weight of the impeller to a certain extent, so it is necessary to increase the rotational kinetic energy of the wind wheel, thereby Increase the starting current of the motor. Authoritative tests: after using the unclean range hood for a long time, the starting current is 316 times higher than the normal starting current, so it is easy to burn out the motor. Air ducts are mainly used in industrial and construction projects, and their application fields mainly include: clean room purification systems in the electronics industry; pharmaceutical and food sterile workshop purification systems; central air conditioning systems in hotels, shopping malls, hospitals, factories and office buildings; industrial Pollution control and dust, flue gas and exhaust ducts; oil suction or supply ducts in industrial environments, etc.; coal mine return air emissions and environmental control systems. First inspect the outside of the ventilator, checking its inner and outer surfaces. Cleaning equipment can be divided into two categories: dust removal equipment and gas purification equipment. The power of the fan collects the air into the mechanical exhaust system. The surface of high-quality high-temperature pipe should be very smooth, free of stains, wrinkles and rough uneven spots. Another is tone. High-quality air-permeable pipes, the elastic steel wire and the glass fiber have the same spacing, and the winding is even. See if you can bend it. A good high temperature ventilation duct should be flexible and flexible. Excellent high temperature ventilation duct, made of excellent silicone rubber, has strong heat resistance and corrosion resistance. The elastic steel wire and glass fiber thread at both ends of the incision is made of the same fabric, which also has the effect of heat resistance and flame retardant. The anti-corrosion of the fan should choose the fan to protect the gas from corrosion. Pay attention to the matching relationship between the pipeline resistance characteristics and the fan characteristics. In order to ensure the smooth operation of the ventilator, the ventilator should run close to the power peak point on the left, and the operating point of the ventilator should be located at the full pressure peak point on the right side (that is, the high air volume side, usually located at 80% of the full pressure peak point. ) on the function curve. Duct fans can provide stroke volume and stroke pressure and are suitable for ventilation systems in most high-rise civil buildings.

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