What are the reverse disassembly and application temperature of the cooling fan?

General cooling fan manufacturers, in the specifications all specify the working temperature, storage temperature, and dry humidity of the cooling fan. Jingyangda Technology for each customer ordered cooling fan, the working temperature, the usual standard is-10-70 ℃, some special environment temperature is lower, is there any way?

For the environment with low humidity, using special ball bearings, the low temperature can reach-40 ℃. If the humidity causes the water to freeze, then the cooling fan will not be able to turn.

When the cooling fan is abnormal, such as not rotating and making a lot of noise, we want to find out, but how to open it, we should first separate the rotor from the stator, the cooling fan with oil bearing and double ball bearing, as long as the clasp is removed, the leaves can be taken out, while the hydraulic bearing is more difficult to remove, most of which cannot be removed, if the problem is still not found. If you need to further disassemble the PCB board for analyzing the cooling fan, you can pull it out as long as the bearing is removed from the stator.

1. Temperature rise: ambient temperature, the temperature of the motor itself, generally the temperature rise of the motor during operation does not exceed 110 degrees).

2. Current: the bearing capacity of the chip needs to be fully considered. When designed, the actual current will be lower than the nominal current of the chip.

3. Withstand voltage: in view of the voltage stability of customer products and the bearing capacity of cooling fan voltage, the voltage of some products is unstable and will be on the high side.

4. Anti-interference: for some products, the environment where cooling fans are installed has strong static electricity, so the cooling fans need to be protected.

5. Waterproof: some products deal with humid environment, or work in water, we need to consider the waterproof level of cooling fans.