How do you play the role of AC cooling fan?

Regarding AC cooling fan manufacturers, the first element is to allow the fan to ventilate, and heat dissipation is the first element, but it allows the cooling fan to play its due role for a long time, that is, reliability. This is an important element to weigh the strength of a cooling fan manufacturer. However, according to my long-term engineering and quality assurance audit summary, our company will consider the following factors for the temperature rise of the cooling fan.
 

Ambient temperature, the temperature of the motor itself, and the current when the temperature rise of ordinary motors does not exceed 110 degrees during operation: a sufficient amount of chip acceptance ability is required. When designing, the actual current will be lower than the nominal current withstand voltage of the chip: for customer products Voltage stability, and the ability to accept the voltage of the cooling fan, some products have unstable voltage, which will be high and anti-interference.
 

Some products have strong static electricity in the environment where the cooling fan is installed, and the cooling fan needs to be protected against water: some products are handled in a humid environment or work in water. We need to consider the waterproof level of the cooling fan. Above 5 items are cooling fans In addition to the reliability factors that you need to think about, there are also some installation factors, breath factors and other cooling fans that need to be adjusted.
 

  If customers propose, we will take corresponding measures. When our product needs to install a cooling fan to remove heat, it may be affected by factors such as space, environment, shape, etc., and form different installation methods. The frequently encountered installation methods are as follows: Plug a screw at each corner to live in the screw hole of the cooling fan.
 

These two heat dissipation methods are likely to cause the cooling fan to resonate with the product and amplify the sound. The fan vibrates fiercely for a long time, which affects the friction between the bearing and the shaft core. Shou Ming will reduce the upside-down installation, the fan blades face down, and use for a long time. If the fan blades are suspended for a long time and the rotor magnetism becomes weak, the distance between the fan blades and the motor stator becomes no longer.
 

The cooling fan may not rotate due to poor induction. Fans containing oil are prone to this kind of problem. It is necessary to do some treatment from the structural design. The exhaust heat dissipation is shorter than the lifespan of the blower heat dissipation. Because the exhaust is constantly hot, the motor often In a state of absorbing heat, the driver IC in the motor stops heating, which makes the performance worse.