Cooling fan speed and influencing factors

The speed of the cooling fan refers to the number of times the fan blade rotates per minute, in RPM. Rotation speed measuring instrument refers to a measuring tool for measuring the speed of an object, and the working principle of the cooling fan. When the cooling fan works, it mainly converts electrical energy into mechanical energy. The main principle is: when the cooling fan is powered, the fan coil has current. According to the right-hand rule of ampere, we know that a magnetic field will be generated around the coil, and a rubber magnet filled with magnetism is attached to the inside of the cooling fan blade. The magnetic field generated by the conductor and the fixed magnetic field generate repulsive force. When the repulsive force is greater than the static friction force of the fan (the friction force of the fan bearing, the wind resistance of the fan blade rotation), the fan blades rotate naturally. The DC fan has a fixed power supply voltage. It is necessary to use a Hall sensor component as a synchronous detection device to control a set of circuits so that the two sets of coils wound around the shaft can work in turn to generate different magnetic fields.

Through the working principle of the fan, we know that the main conditions for determining the speed of the fan are the structure and components of the fan itself, the friction of the bearing and the wind resistance of the fan blade, and of course there are external factors. Let’s analyze it below: the cooling fan is passed Air cooling realizes heat dissipation. The main factor affecting air cooling heat dissipation is the environmental structure of the cooling system. When the system environment is relatively sealed, the air pressure of the fan should be considered when selecting the cooling fan. If the fan air pressure is not enough, the fan speed will be obvious. Affected, the air volume drops significantly, and the heat dissipation effect cannot be achieved. Therefore, the external wind pressure is a factor that affects the fan speed (supercharged cooling fans can overcome); there is also a more obvious factor is the external environment, such as sand, oily , High and low temperature and other environments, if the ordinary cooling fan is not protected, the harsh environment will have a significant impact on its speed.

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 heat dissipation and ventilation products as an integrity enterprise.

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 cooling fan products have obtained UL, CUL, CE, CCC, ROHS and other international certifications.

Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer (the production plant Mianyang Anpu Electric Co., Ltd. was established in 2009 with the China Electronic Technology City Mianyang Economic Development Zone, Sichuan), with 20 years of R&D, production and sales experience. Our research and development, 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.