Pay attention to the DC cooling fan.
It should be noted that because we are familiar with the manufacturer of the cooling fan of the mining machine, we know that in the mining workshop, the temperature of the sauna is very high, but if the temperature is too high, it may cause the mining machine to malfunction and restart. It will have a certain impact on the operation of the mining machine. After a period of time, it may cause irreversible damage, which will greatly consume the life of the shearer, so it is necessary to do a good job of heat dissipation. The shearer sends heat to the shearer through the DC cooling fan, so that the working temperature of the shearer is in the normal range. What happened to the mine owner's cooling fan? Because of its high temperature and long-term use, miners must ensure that there is no problem with the following two points. Even if the noise is slightly higher, the basic heat must be eliminated. As mentioned above, the high temperature of the miners. Due to the long-term high temperature dust environment, the fan cannot rotate, so the DC fan must be stable in quality. When the cooling fan stops turning, the miner's body temperature rises immediately. Both models use more DC cooling fans. One has 11, 4300 revolutions per minute, the second has 7, 6000 r/min. A voltage equivalent to 12v/2.4a will generate a lot of wind and pressure. When the temperature of the mining machine is high, the speed regulation is realized, and the speed of the DC cooling fan is automatically increased. Otherwise, the speed will become slower and slower. It can effectively extend the service life and improve the comfort.
Cold DC fan starting voltage? First look at the starting voltage and rated voltage of the DC cooling fan. Starting voltage: the low voltage of the electric fan suddenly electrified. Operating voltage: refers to the power supply, fan normal, running, stable, voltage, rated voltage. Second, what is the relationship between the starting voltage and the rated voltage? Start, voltage, ordinary DC fan, rated voltage 12v, starting voltage, generally less than 7v, as a system, power supply, voltage, there may be instability, if the starting, voltage, rated voltage and rated voltage The smaller the distance between the voltage, the greater the DC fan, the greater the working voltage range, the lower the voltage that can be used to start and start the fan. Next steps: start, voltage, test method. Starting, voltage, value can be measured with multimeter. When the fan is running, the current is small, which not only consumes less power, but also reduces the calorific value of the fan motor and prolongs the service life of the fan. On the fan, it can also slow down the evaporation rate of the oil, so the smaller the current, the more reliable the fan. The smaller the fan current, the smaller the shaft power, the smaller the actual gas transmission power, the higher the fan efficiency. Fan, working current, ammeter available ammeter.