The Role of DC Cooling Fans in the Mining Industry
Category:
Industry Trends
Release time:
2021-12-20
Pay attention to DC cooling fans.
It’s important to note that, given our familiarity with mining-machine cooling fans, we know that in mining workshops, the temperature in sauna-like environments can get extremely high. However, if the temperature rises too high, it could cause the mining machines to malfunction and even trigger restarts—thus significantly impacting their operational performance. Over time, this could lead to irreversible damage, greatly shortening the lifespan of the mining machines. Therefore, it’s crucial to ensure effective heat dissipation. These mining machines use DC cooling fans to expel heat outward, keeping the machines’ operating temperatures within a normal range. What’s wrong with the miners’ cooling fans? Due to their exposure to high temperatures and prolonged use, miners must ensure that the following two points are functioning properly. Even if the noise level is slightly higher, the fundamental task of dissipating thermal energy must still be accomplished. As mentioned earlier, miners often face high-temperature conditions. Because of the long-term exposure to hot, dusty environments, the fans may become jammed or unable to rotate. Thus, the quality of DC fans must be exceptionally stable. Once the cooling fan stops rotating, the miner’s body temperature will immediately start to rise. Both models employ multiple DC cooling fans: one has 11 blades rotating at 4,300 revolutions per minute, while the other has 7 blades spinning at 6,000 revolutions per minute. Operating at a voltage of 12V/2.4A, these fans generate substantial airflow and pressure. When the mining machine’s temperature rises, the system automatically adjusts the fan speed, increasing the rotational rate of the DC cooling fans accordingly. Otherwise, the fan speed would gradually slow down, which could shorten its lifespan and reduce comfort levels. By effectively regulating the fan speed, this approach not only extends the service life of the fans but also enhances user comfort.
What is the starting voltage for a DC cooling fan? Let’s first take a look at the starting voltage and rated voltage of a DC cooling fan. Starting voltage: The low voltage at which the fan suddenly begins to operate. Operating voltage: Refers to the voltage at which the power supply, fan, and system are all functioning normally, stably, and at their rated voltage. Second, what is the relationship between the starting voltage and the rated voltage? For ordinary DC fans with a rated voltage of 12V, the starting voltage is typically less than 7V. If the starting voltage is close to the rated voltage, the system and power supply may become unstable. The smaller the gap between the starting voltage and the rated voltage, the wider the operating voltage range of the DC fan, and the lower the voltage required to start and run the fan. Next, let’s discuss the testing method for determining the starting voltage. The starting voltage can be measured using a multimeter. When the fan is running, the current is relatively low, which not only reduces power consumption but also lowers the heat generated by the fan motor, thereby extending the fan’s service life. Moreover, on the fan itself, this lower current can slow down the evaporation rate of the lubricating oil. Thus, the lower the current, the more reliable the fan becomes. The smaller the fan current, the lower the shaft power, the lower the actual air delivery power, and the higher the fan efficiency. To measure the fan’s operating current, an ammeter can be used.
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