At present, the technical performance of cooling fan has become increasingly mature with continuous innovation and iteration, and the emergence of new technologies has also brought more possibilities for cooling fan.At present, in the size range of 5V, 12V, 24V, 48V, 110V, 220V, 380V, square, round, elliptical and elliptical cooling fans, according to their flow directions, they can be mainly divided into four types:

axial flow cooling fan:its main characteristics are high velocity and medium air pressure, which is suitable for general environment cooling.The blades of the fan keep the air flow direction (parallel) the same as the axis.The impeller of the fan is somewhat similar to the propeller.When it works, most of the airflow is parallel to the shaft, in other words, along the axial direction.When the inlet airflow is zero and the free air is zero, the power consumption of the fan is also lower.At the same time, the power consumption also increases with the increase of airflow back pressure.

Generally speaking, axial-flow cooling fans are mainly installed in electronic and electrical equipment, which can save a lot of space and is easy to install, so they are widely used.At present, square radiating fans commonly seen in the market can basically be classified into this category.

Francis cooling fan:Francis cooling fan can get better heat dissipation under high flow rate and high wind pressure.It has no difference with the shape of axial fan.Actually, the inlet of mixed-flow fan is along the axis, while the outlet is along the diagonal direction of the axis and the vertical axis.

centrifugal cooling fan:centrifugal cooling fan can change the air volume.When the fan is running, the impeller drives the air to move along the axial direction, and the suction pipe moves along the axial direction, while the exhaust pipe is perpendicular to the axis.In many cases, axial flow fans can achieve cooling effect, but if it is necessary to exhaust the airflow at a sharp angle or strong wind pressure, it may be necessary to choose centrifugal fans.This kind of centrifugal fan is vividly described as a small centrifugal fan.We generally use multi-blade centrifugal fans, which are mostly used in machinery.They have different appearances but the same principle.

Cross-flow cooling fan:Cross-flow cooling fan has low flow rate, small wind pressure and large cooling area.It can generate a large amount of airflow and is generally used to cool a wide surface.The fan uses a long cylindrical fan impeller to work, which can reduce the noise caused by high-speed operation.The diameter and caliber of the impeller are large, so on the basis of ensuring the whole air circulation, the noise caused by high-speed operation can be reduced by adopting a lower rotating speed.Suitable for elevators, air conditioners, automobiles, etc.

With the gradual improvement of cooling fan technology, the requirements for cooling fans in major industries will become higher and higher.For 33 years, Taiwan Province Sanju Motor has been focusing on research and development, manufacturing and sales of AC, DC and EC axial cooling fans, and it is the third giant motor to choose cooling fans.