DC cooling fan is an important heat dissipation equipment of modern industrial machinery. It has many characteristics such as good heat dissipation effect, long service life, simple structure, and convenient device, and is widely used in mechanical heat dissipation. so you know what is dc cooling fan?
what is dc cooling fan?
The DC cooling fan is mainly composed of a rotor, a stator, a fan blade and other auxiliary components. There should be many semiconductor components in the control circuit, which have now been stored in one or more ICs. Many manufacturers have specially designed and manufactured many types of control motor ICs to supply fan circuits for design and application. Different types of IC control circuits are different, but the main purpose is to provide the effective function of the coil and fan-related characteristic requirements for more effective control and maintenance.
The working principle of DC cooling fan:
After DC voltage and electromagnetic induction, electric energy is converted into machinery to drive the fan blades to rotate. Simply put, it relies on the coil and IC to switch from time to time, and the induction magnetic ring drives the fan blades to rotate from the heat dissipation device.
Advantages of DC cooling fan:
1. The DC cooling fan adopts the most advanced design, with large air volume, low noise, long life, corrosion resistance and other characteristics.
2, the use of high-quality bearings, silicon steel sheet, enameled wire, with higher reliability.
The monitoring methods of the DC cooling fan itself are:
There are two types of monitoring methods for the DC cooling fan: alarm sensor and speed sensor. The alarm sensor can give an alarm signal when the fan speed is lower than a certain threshold value, and the speed signal output can complete the real-time monitoring of the fan speed. Obviously, the greater the air volume of the DC cooling fan, the higher the heat dissipation ability. This is because the heat capacity ratio of air is certain, and more air volume, that is, more air per unit time, can take away more heat.
The speed signal output from the DC cooling fan circuit is usually pulsed, and each wave head indicates that the fan has rotated once. Such a signal can be directly provided through the data bus to stop the display of the host. The speed signal output by some fans is not the real speed of the fan, but a multiple of the speed. For example, 2, 4 or 6 pulses are generated per revolution, which must be processed to form a real speed signal reflecting the fan.