What are the basic knowledge of radiator cooling fan?
With the increasing of the factory equipment, need to buy all types of machinery and equipment to use, thus extending the service life of mechanical equipment has become a critical problem, and the technical and performance of radiator cooling fan has completely reached a mature stage, it can effectively reduce the equipment working environment temperature, prolong the service life of equipment. Then the basic knowledge of radiator cooling fan what? Just by YiRongChuan below small make up for all detail. A, radiator cooling fan operation principle: according to the amp right-hand rule, the electric current through a conductor, can produce a magnetic field around, if put the conductor at a fixed magnetic field, will generate attraction or repulsion, moving object. Inside the cooling heat dissipation fan blade, attached to a charge in advance of the magnetic rubber magnet. Around the silicon steel sheet, the axis part two sets of coil winding, and use hall sensor component as synchronous detection device, a group control circuit, the circuit make the job of two groups of coil turns of coil axis. Silicon steel sheet to produce different magnetic pole, the pole and rubber magnet repulsion. When the repulsion is greater than the lice fan of static friction force, natural rotating blades. Second, the heat dissipation of the cooling fan speed: radiator cooling fan speed refers to the cooling fan blades turns per minute, the unit is the RPM. Cooling fan speed by the motor coil number of turns, the number of working voltage, cooling fan blades, Angle, height, diameter, and bearing system common decision. The speed and quality of the cooling fan is not necessarily associated. Radiator cooling fan rotation speed can be through the internal rotational speed signal measurement, but can be by external measurements ( External measurement is to use other instruments to see how fast of the cooling fan in the kitchen, the internal measurement can directly into the BIOS, but can be by software. Internal measurement error relatively larger) 。 As the change of environmental temperature, sometimes need different speed cooling fan to meet the demand. Can be based on the current operating temperature ( If the temperature of the heat sink) Automatic control of the cooling fan speed, temperature, while increasing high speed, low temperature, lower speed, to achieve a dynamic balance, so that the wind noise and cooling effect to keep a best combining site. Three, heat dissipation of the cooling fan, air volume, heat dissipation of the cooling fan air volume is air cooled radiator cooling fan out or into the air volume per minute, if calculated by cubic feet, the unit is CFM. If according to cubic meters to calculate, is to the CMM. Radiator products often use air unit is CFM ( Is about 0. 028 cubic meters/min) 。 Under the same heat sink material, air flow is the most important indicators of air-cooled radiator cooling capacity. Obviously, the greater the volume of the radiator cooling cooling ability of cooling fan is also higher. This is because the heat capacity ratio of air is certain, larger volume and per unit time is more air can take more heat. Of course, the same air under the condition of the cooling effect and wind flow way. Air volume and air pressure air volume and air pressure are two relative concepts.