What is a DC Cooling Fan?

DC cooling fan is an important cooling device for modern industrial machinery, which is widely used in machinery cooling because of its good cooling effect, long service life, simple structure, easy installation, and many other features, can also be used in automobiles, power supplies and household equipment. Brushless DC cooling fans have the characteristics of low noise, stable operation and longer service life. You can choose from a variety of sizes and speeds.

What is a DC cooling fan?

DC cooling fan is a combination of rotor, stator, fan blades and other auxiliary components. There are many semiconductor components in the control circuit, which are now incorporated in one or more IC. Different models of IC control circuits are different, but the main purpose is to provide more effective control and protection for the effective function of the coil and fan-related characteristics required.

Working principle of DC cooling fan

Through DC voltage and electromagnetic induction, the electrical energy is converted into mechanical and thus drives the rotation of the fan blades. In simple terms, it is a cooling device that relies on the coil and IC to continuously switch and induct the magnetic ring from driving the fan blades to rotate.

Advantages of DC cooling fan

1. DC cooling fan adopts the most advanced design, with large air volume, low noise, long life, corrosion resistance, etc.
2. Using high quality bearings, silicon steel sheet and enameled wire, it has higher reliability.

There are two types of monitoring methods for the DC cooling fan itself: alarm sensor and speed sensor. Using the alarm sensor, an alarm signal can be given when the fan speed is below a certain threshold value, while the speed signal output enables real-time monitoring of the fan speed. Obviously, the higher the airflow, the higher the cooling capacity of the DC cooling fan. This is because the heat capacity ratio of air is certain, and a larger air volume means more air can take away more heat per unit time.

The speed signal from the DC cooling fan circuit is usually in the form of pulses, with each wavehead indicating that the fan has turned one revolution, and such a signal can be provided directly to the host computer for display via the data bus. The speed signal from some fans is not the true speed of the fan, but rather a multiple of the speed, such as 2, 4 or 6 pulses per revolution, which must be processed to form a true speed signal reflecting the fan.