The role of blades on DC fans

The DC fan converts electrical energy into machinery through DC voltage and electromagnetic induction to drive the rotation of the blades. Therefore, the fan shell and blades are an indispensable whole. Most people know these two parts are very important, so one of them What kind of role does it have?

First, the curvature of the blade: within a certain range, the greater the curvature of the blade, the greater the gas kinetic energy at the same speed, that is, the greater the air volume and pressure; at the same time, the greater the resistance of the blade, which requires the torque of the motor Bigger.

Second, the diameter of the motor: Due to the existence of the motor and the bearing, it is inevitable that the central part of the DC fan main shaft must have no blind zone through which air flows. The diameter of the main shaft determines the size of this blind zone. The diameter of the main shaft mainly depends on the power of the fan motor-a high-power motor requires a larger stator winding coil, which inevitably takes up more space. If it cannot be expanded vertically (increased height), it has to be expanded horizontally ( Increase area).

Third, the curvature of the blade: In addition to the curvature of the section, the blade does not extend straight in the radial direction in the top view plane, but is slightly curved in the direction of rotation, showing a certain arc. If the blades extend straight in the radial direction, the air flow driven by the rotation of the cooling fan will be scattered on the air outlet side, the air supply distance is short, and the "power" is not concentrated; if the current product version has a slight curvature, the air flow can be guaranteed Concentrate in the columnar space directly in front of the air outlet to increase the air supply distance and wind pressure.

Fourth, blade spacing: Too small a distance between blades will cause airflow disturbance, increase friction on the blade surface, and reduce fan efficiency; too large a distance between blades will cause increased pressure loss and insufficient wind pressure.

Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer with 20 years of R&D, production and sales experience. Main business: cooling fan, DC fan, AC fan, silent fan, centrifugal fan, blower and other full range of heat dissipation and ventilation products as an integrity enterprise, the series of cooling fan products have obtained UL, CUL, CE, CCC, ROHS, etc. International Certification.

Shenzhen Ruiapple Electronics Co., Ltd. was established in 2000. For 20 years, it has focused on R&D, manufacturing and sales of DC AXIAL FAN, AC AXIAL FAN, CENTRIFUGAL FAN, and blower ( BLOWER), AC to DC fan (EC FAN), DC motor (DC MOTOR), AC to DC (EC MOTOR) motor and other full series of cooling and ventilation products as a whole series of integrity enterprises.

Shenzhen Ruiapple Electronics Co., Ltd. has its own brand "RUIAPPLE", which is registered as a patent trademark by the government. The company passed the ISO9001-2015 system certification in the early years. The series of heat dissipation fan products have obtained UL, CUL, CE, CCC, ROHS and other international certifications.

Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer (manufacturing factory Mianyang Anpu Electric Co., Ltd. was established in 2009 and China Electronic Technology City Mianyang Economic Development Zone, Sichuan), with 20 years of R&D, production and sales experience. Our R&D, quality control and production always pay close attention to new technologies and new methods to pursue the goal of zero defects, continuously improve product quality and stability, improve products, innovate products, and lean production. Our product quality and production technology have always been in the forefront of the industry, with complete product specifications and comprehensive market competitive advantages.

Shenzhen Ruiapple Electronics Co., Ltd. has a strong R&D team, which has been dedicated to product research and development for many years, providing customers with complete heat dissipation solutions, striving for perfection, improving processes, and optimizing performance. It is targeted at consumer goods, office equipment, aerospace industry, automotive electronics, Ventilation system, machinery equipment, communication equipment and other industries conduct special research and provide products for the industry characteristics of the application of heat dissipation and ventilation products.