Four advantages

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  Power system: PMSM permanent magnet synchronous motor

  1.Stronger: 260n M amazing torque, stronger driving force and more stable torque；
  2.More efficient: unique external rotor high torque design, higher control accuracy；
  3.More energy saving: save energy consumption by 30%, reach IE4 high efficiency and energy saving standard, and reach the new level of national energy efficiency standard gb30253-2013;
  4.Lifelong maintenance free: completely sealed without replacing lubricating oil, oil seal and other accessories, saving a large amount of later maintenance costs;
  5.Quieter: 38dB ultra-low volume, only the sound of wind in your ear;
  6.Low temperature rise: the temperature rise of the motor is lower than 35 ℃, and the service life is longer!
  

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  control system: vector frequency conversion control

  1. More stable: the new generation of high reliability IGBT module, motor vector algorithm and current suppression processing mode make the start more stable
  2.Quieter: carrier frequency up to 16KHz, without any electromagnetic noise during acceleration, deceleration and operation；
  3.More reliable: PCBA three proof paint treatment, durable；
  4.Smooth restart: the smooth restart function can be realized when the fan blade does not stop completely；
  5.25 kinds of fault protection: up to 25 kinds of fault protection functions (overcurrent, overvoltage, undervoltage, over temperature, phase loss, overload, etc.)。
  

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  Patented blades: fan airflow components

  1．Blade design - streamlined variable section
  Applying the theory of equal chord length of aerodynamics and the principle of relative linear velocity, the blade root to blade tip gradually narrows (304-186mm) and thins (43mm-21mm), the force is more balanced, the air supply is more uniform, and there is no cavity in the center.
  2．Blade material - aviation industry plate
  It adopts 5052h32 high-grade 1.5mm aviation grade aluminum alloy motherboard, which is formed by precision numerical control, with higher strength and flexibility to ensure no fracture.
  3．Blade weight - lighter and safer
  Each blade is only 6.7 kg (7.3 m in diameter, excluding buffer parts). The number of blades is small, the weight is light, the motor load is reduced, the service life is prolonged, and it is safe and energy-saving.
  

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  Structural connection: patented structural design of key parts of tenon and mortise connection

  1．Connection between blade and petiole
  Tenon and mortise connection: the "concave" section of the blade handle forms a joint bite with the "convex" section of the buffer, so as to eliminate the outward centrifugal force of the blade during the operation of the fan and the shear force during the start and stop of the fan;
  The transverse screw is fastened in the same direction as the running track of the fan, free from right angle shear force, so as to ensure that the blade is not broken and fundamentally eliminate the potential safety hazard of secondary injury.
  2．Connection between blade handle and hub
  Through the mutual engagement of stepped concave convex sections, the blade handle is integrated with the hub / motor. The overall structure is used to bear the centrifugal force during the operation of the fan, and all fasteners are not stressed.
  3．Connection between motor and flange
  Safety ring: connect the five leaf petioles with the upper cover of the motor, and use the structural bite mode to realize the stress of the overall structure;
  Anti falling disc: the "concave" section of the flange and the "convex" section of the anti falling ring are engaged and hooked with each other under the action of gravity to ensure the reliable connection between the motor flange and the motor.