Cooling fanThey are generally divided into the following three categories:

1 Axial flow: the direction of the airflow outlet is the same as the axis direction.

2 centrifugal: the use of centrifugal force will flow out along the blade.

3 mixed flow type: has the above two air flow modes.

Speed refers to the speed of the fan rotation, usually in 1 minutes to measure the number of turns, namely: rpm. The rotating speed is related to the number of turns of electromechanical winding, wire diameter, outer diameter and bottom diameter of fan blade impeller, blade shape and bearing used, etc. The rotating speed increases and the air volume increases accordingly.

The size of the speed value represents the size of the air volume to a certain extent. When the conditions are certain, the greater the speed, the noise and vibration will increase accordingly. Therefore, when the air volume meets the heat dissipation requirements, low-speed fans should be used as much as possible. General speed (taking DC axial fan as an example):2510 fan 7000~12000rpm;3010 fan 5000~9000rpm;4010 fan 5000~7000rpm;5010 fan 3500~5000rpm;6025 fan 2600~4500rpm;7025 fan 2400~3600rpm;8025 fan 2000~3500rpm;9225 fan 1600~3100rpm;12025 fan 1500~2500rpm;12038 fan 2000~3200rpm. The fan speed can be tested by BIOS when starting the computer, or by other monitoring software that comes with the motherboard; it can also be tested by the speed tester. Note: The first two methods must be a fan that supports the speed measurement function to be measured.

Shenzhen Jiangshanlai Electronic Technology Co., Ltd. was founded in Shenzhen, China in 2005. It 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, supercharged cooling fans, micro cooling fans, DC 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.