The application of fans in life is everywhere, including the precision of instruments and equipment products also need to beDC cooling fan. Therefore, it is very necessary to choose a good DC cooling fan for instruments and equipment. So how can we choose a suitable for the use of DC cooling fan in the huge sales market?

1. Selecting and selecting well-known brands from well-known brands represents the selection of good fans, which is the key to ensuring the quality of fans.
2. From the appearance, the selection should be relatively strong on the surface, the color tone should be relatively pure (very gray and black, which is not important for colorful fans), and there should be no burr on the edge of the frame blade. Look at the thickness of the fan blade (it is very important that it is too thin and easy to break), and there is no great deformation when pinching the frame hard.
3. Bearing on the selection, because the bearing is divided into ball bearings and oil bearing two. Ball bearings have a long service life and low noise, but they are generally expensive. The service life of the oil bearing is 1/3 shorter than that of the rolling bearing, and it will produce some noise after a period of application (more than one year), but the price is relatively low. After mastering the above contents, everyone can choose, but if the price of some steel ball fans is similar to that of oil content fans, it indicates that their rolling bearings are old or substitute products must not be bought. Bearings in new products pushed by various manufacturers (except for oil-bearing bearings) are not easy to exceed the service life of ball bearings, and will continue to be noisy in subsequent applications.
4. The fan is selected after all normal operation, when the fan is running;
A. should only hear the sound (some high speed ratio will have electromagnetic induction sound), if there are other sounds, it shows that its quality is not very good. If the fan speed ratio is not very high, such as the fan speed ratio of seven centimeters does not exceed 3500RPM, but the sound indicates that the fan quality is very poor.
B. hold the fan hard and feel its vibration, and after changing different angles of view, the hand feels the same, indicating that the vibration of the fan is very good. if there is vibration, it will cause co-vibration on the main chassis. before, some people started the loud noise, which was mainly caused by the vibration caused by the fan starting.
C. forcibly stop the fan from rotating (it is not necessary to cut off the fan blades) for one minute or so, and touch the management center of the fan blades with hands to feel its temperature. if the temperature is high but does not pass, it can avoid the fan from being damaged when it is stuck and cause a fire accident.
The above is to select the appropriate DC cooling fan method, more information, please consult our official website!