The fan adopts advanced technology. The design of backward curved centrifugal wheel is optimized by means of CFD hydro-field simulating. The design is more accordant with the aerodynamic characteristics, high efficiency, and stable airflow.
All steel laser cut blades are welded and positioned accurately. The overall strength of the blades are designed and welded to withstand long hours high speed operation.
High Balancing Level
Each wheel is subjected to dynamic balance test. The balancing level is kept at G4.0 (Typical products are balanced to G6.3 only). Durability, stability and quietness are guaranteed.
High Performance Curve
The wheel has a stable, smooth air performance curve which can efficiently avoid performance drop caused by the deviation of the working point.
The fan shaft power will not exceed the motor rated power regardless the operation point of the stable working range. Customers can use it without any worries.
ü Our products use advance FEA-aided design to enhance the reliability of structure.
ü The hub and the wheel are strengthened and leak-proof thanks to the all-steel continuous welding method. Safety is also significantly improved during operation.
ü The new shaft and coupling technology ensuring the accuracy during the assembly process while maintaining high reliability.
ü Maximum load surpasses 35% of limit speed to ensure the long-term continuous operation of the security.
ü Bearing seal can be lubricated. Service life is more than L10:80000 hours to ensure operation reliability and durability.
ü The drive unit has a protective shield using eye-catching warning color to ensure personal safety.
ü All our products have undergone vibration tests prior leaving the factory in order to achieve reliable and durable operation.
ü Venturi inlet shall match the front disc precisely to avoid turbulent flow and air leakages, so that the air flows more smoothly to improve aerodynamic performance.
ü Optimized design repeatedly of CFD flow field simulation to ensure aerodynamic performance complied with the flow field characteristics.
ü Excellent aerodynamic performance, the maximum efficiency is up to 81%.
- User Friendly
The fan housing shall be made in steel and its thickness and strength should be able to withstand the maximum running weight of the fan. The volute shall be continuously welded and equipped with access door for removing possible foreign objects entered into the scroll.
Fan inlet shall be aerodynamic design round curved section to transit the air to the wheel cone smoothly, it shall have good commutated effect to reduce turbulence, improve fan efficiency and reduce noise.
Fan surface shall be polished and cleaned up to remove particulates, welding slag, burrs, sharp edge, iron, oil, then epoxy coating or high temperature coating for high temperature environments use, fan surface shall be free of sags, wrinkle, blisters, exposed metal or peeling after coating. It shall be no corrosion and rust at least 10 years in allowable working condition.
Belt drive and Coupling drive
Fan shaft shall be heat treated through soaking furnace to the hardness level between HB250-280, and the maximum load should be 35% higher than the maximum fan operational speed. The shaft shall have shaft cover. It shall use 40 Cr steel when it is operated under 250。C and 35 CrMo shall be used when operating between 251。C - 450 。C. Cylindrical bearing box shall be used to support the fan shaft.
The service life span shall be longer than L-10: 80,000 hours at the maximum operating speed. N32-N46 lubricant shall be used inside. The bearing box shall equipped with water cooling system when operating between 61。C - 250。C. Water can be added depending on the actual operating environment. Water delivering system shall be added when operating above 250。C. The rate of evaporation shall be considered base on the operating temperature between 0.3 – 1 m3h.
The pulley shall be made of cast-iron and its construction size is determined corresponding to 130% of the driving power. The pulley and belt shall be furnished with cover. Flexible coupling shall be used for coupling drive. The safety of conveying power and torsion shall meet the design requirements. It shall have coupling guard.
Motor is carefully matched to the fan load, protection level IP54, and insulation class F. Motor ball bearings are used and lubricated. Motor and drives are isolated from the air stream to avoid grease or dirt accumulation.
Explosion-proof Structure (Only for explosion-proof type)
Fan shall conform to Spark C explosion-proof structure according to AMCA99 Standard. The inlet shall mount copper ring and the motor shall adopt explosion-proof type. The whole fan should own CNEX certification and the manufacturer must own the production license for anti-explosion electric products.
Aluminum manufacturer name plates each containing serial number and model type are mounted permanently on all fan bodies. All name plates are traceable by customers.