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Time：2021-09-16Views：0
Recently, we dealt with a case of changing the installation method of the cooling fan, which has a great impact on the cooling fan. The customer is a company that makes refrigeration equipment. The cooling fan is installed in a large-scale equipment to dissipate heat. Blowing type, that is, using a cooling fan to blow at a hot place to blow away the heat. But now, the method of pumping is used to close the blades of the cooling fan to the heat sink to remove the heat from the heat sink, but it is found that the fan is individually broken.
According to our analysis, this is because when the cooling fan is running, due to its high speed and high power, it has high heat. In addition to being in a high temperature environment, it continuously supplies heat to the cooling fan, resulting in the inside of the cooling fan. The temperature rises, and the chip burns out due to the high temperature. Why the original one is not broken? Because the original cooling fan sucks cold air, the cold air actually has a cooling effect on the motor. Therefore, one is heating and the other is reducing heat, which is very different.
Later, we used a chip with a temperature resistance of 100 degrees, and reduced the current without changing the air volume and speed of the cooling fan, so that the temperature of itself was also lowered. After the improvement, the cooling fan was used normally.
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