A cooling fan is an important component in electronic products, which is designed to provide cooling effect to electronic devices and prevent them from being damaged due to overheating. Cooling fans are widely used in computers, colour TVs, refrigerators, air conditioners and various other electronic appliances, such as CPUs, cases, power supplies and graphics cards. Its working principle is to use air flow to bring out the heat inside the equipment and accelerate air convection to achieve the purpose of cooling.

There are two main types of cooling fans: axial fans and centrifugal fans. Axial fans operate by rotating blades to draw air in from one direction and discharge it in the other, creating an airflow. Centrifugal fans, on the other hand, draw air in through rotating blades and then expel it from the centre outwards through centrifugal force, creating an airflow.

Cooling fans are used in a wide range of applications, including computers, servers, printers, fax machines, medical instruments, and various other electronic devices. In computers, cooling fans are mainly used to dissipate heat from components such as CPUs, graphics cards, and power supplies to prevent the equipment from overheating. In servers, cooling fans are mainly used to dissipate heat from server motherboards, CPUs, memory and other components to ensure stable server operation. In printers, fax machines, medical instruments and other equipment, cooling fans are also widely used to ensure the normal operation of the equipment.

The performance and life of the cooling fan directly affects the operational stability and service life of the electronic equipment. Therefore, it is very important to choose a high-quality cooling fan. At the same time, regular cleaning of dust and dirt on the cooling fan, as well as adding lubricant to the fan, is also one of the important tasks in maintaining the cooling fan.