"Cooling fan" must be familiar with it. It will exist in computers, drinking fountains, refrigerators, air conditioners, air purifiers, cars, etc. However'
Cooling fanThis word is only a general term for all types of fans. How much do you know about the specific classification of cooling fans. The most basic classification of "cooling fan" is according to the power supply mode: DC power supply is called DC cooling fan, and AC power supply is called AC cooling fan. These are the foundations. As we all know, today is mainly to introduce the classification according to the different flow directions of its inlet and outlet airflow. Mainly divided into the following four categories:
Category I, axial fan
The blades of the axial fan push air to flow in the same direction (parallel direction) as the shaft. The impeller of the axial fan is somewhat similar to the propeller. When it is working, most of the airflow flows parallel to the shaft, in other words, along the axis. Axial fans have the lowest power consumption when the inlet airflow is free air with zero static pressure. When running, the power consumption will increase with the rise of the air flow back pressure. Axial fans are usually installed on the cabinet of electronic and electrical equipment, and sometimes integrated on the motor. Due to the compact structure of the axial fan, it can save a lot of space and is easy to install, so it is widely used. The main advantages are: higher flow rate, medium wind pressure, to meet the general environment of heat dissipation.
Class II, cross-flow fan
A cross-flow fan, also known as a cross-flow fan, can generate a large area of wind flow and is usually used to cool large surfaces of equipment. The inlet and outlet air of this fan are both perpendicular to the axis. The cross-flow fan uses a relatively long barrel-shaped fan impeller to work. The diameter of this barrel-shaped fan blade is relatively large. Because of the large diameter, a relatively low speed can be used on the basis of ensuring the overall air circulation. Reduce the noise caused by high-speed operation. More used in elevators, air conditioning, cars and other equipment. The main advantages are: low flow rate, low wind pressure, large heat dissipation area.
The third category, mixed flow fan
Mixed flow fan is also called diagonal flow fan. This kind of mixed flow fan and axial flow fan are no different from the appearance. In fact, the air intake of mixed flow fan is along the axis, but the air outlet is along the axis and the diagonal direction of the vertical axis. This kind of fan is conical because of the blades and the outer cover, so the wind pressure is higher. Under the same size and other comparable performance, the centrifugal fan has lower noise than the axial fan. The main advantages are: high flow rate and relatively high wind pressure to achieve better heat dissipation effect
Category IV, centrifugal fan
When a centrifugal fan works, the blades push the air to flow in a direction perpendicular to the shaft (ie, radial). The air intake is along the axis, while the air outlet is perpendicular to the axis. In most cases, the use of axial fans can achieve cooling effect, however, sometimes if the need to rotate 90 degrees of air discharge or need a larger wind pressure, you must choose a centrifugal fan. Strictly speaking, the fan also belongs to the centrifugal fan. The main advantages are: change the direction of the wind, more limited flow rate, high wind pressure.
The above is the sharing of knowledge of the classification of the cooling fan structure. Shenzhen Jiangshanlai Electronic Technology Co., Ltd. is a large-scale enterprise specializing in the customization, research and development, manufacturing, sales and service of DC brushless motors, DC cooling fans, DC brushless fans, DC bracket fans, pressurized cooling fans, micro cooling fans, DC blowers, and non-standard fans, DC fan wholesale manufacturers and DC fan suppliers. Products sell well in Guangdong, Shenzhen, Guangzhou, Dongguan, Fujian, Zhejiang, Jiangsu and other places.
If there is a need, you can consult us.
