Types of cooling fans
1. Axial flow fan
The airflow direction of an axial fan is parallel to the fan shaft, characterized by a large air volume and relatively low air pressure. Axial flow fans are usually used in situations where high air volume is required and relatively low air pressure is required, such as front and rear fans of chassis, and heat dissipation of servers.

2. Centrifugal fan
The air flow direction of a centrifugal fan is perpendicular to the fan shaft, which can generate high air pressure but relatively low air volume. Centrifugal fans are commonly used in situations that require high air pressure, such as heat sinks with dense fins, which can allow air to better penetrate the fins for heat dissipation.

3. Crossflow fan
The airflow direction of a cross flow fan is horizontal, which has the advantages of low noise and uniform air pressure. Cross flow fans are commonly used in situations where high noise levels are required and uniform air supply is necessary.
