As we all know, fans are also divided into DC fans and AC fans. In this issue, let us talk about this DC fan.
dc cooling fan is what?
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.
What is the working principle of a 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. Through DC voltage and electromagnetic induction, electric energy is converted into machinery to drive the fan blades to rotate. Relying on the coil and IC to switch from time to time, the induction magnetic ring drives the fan blades to rotate.
Mainly used in computer peripherals, household appliances, sound amplifier systems, car refrigerators, vehicle equipment, instrumentation, mechanical equipment ventilation and heat dissipation
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.
Choose DC cooling fan to think about:
1. Speed of DC cooling fan:
The speed of the DC cooling fan is the same as the power. The higher the speed, the greater the wind and the better the heat dissipation function. But the high speed will cause high vibration, and the noise will follow, and the higher the speed of the fan service life also has a great influence.
2. Material of DC cooling fan:
Nowadays, the popular materials on the market are aluminum and plastic. Aluminum fans are generally made of AC fans. AC fans have low heat dissipation performance and small air volume. The materials of DC cooling fans are generally plastic.
3. Power of DC cooling fan:
The greater the power of the bulb, the brighter it is, and the louder the power of the speaker. The greater the power of the DC cooling fan, the stronger the natural wind, and the better the heat dissipation function when the wind is large, so we should separate the material and work of the DC cooling fan. Principle to comprehensively compare and select.
4. Performance of DC cooling fan:
The DC cooling fan must be able to provide sufficient exhaust volume (ie speed). When the temperature of the hot air is relatively low or the hot air flow is relatively small, it works in reverse.
In the process of using the DC cooling fan, we can know that it uses DC to provide power for it. The DC motor is composed of two parts: a stator and a rotor. The stator has magnetic pole components (winding or permanent magnet), and the rotor has After the winding is energized, the rotor also forms a magnetic field (magnetic pole), so we can know that there is an angle between the magnetic poles of the stator and the rotor, and through the stator and rotor magnetic field between the N pole and the S pole of the mutual absorption down to work.