'Suddenly like a night of autumn wind' [Car cooling fan] How is the speed controlled?
'Suddenly like a night of autumn wind' [car cooling fan] How is the speed controlled?
u003cbru003e The operation of the cooling fan changes with the heat. If it runs at a slower speed, the cooling fan will produce less noise and consume less energy.
u003cbru003e In most design requirements, the air temperature is usually lower than the maximum design temperature after the cooling fan has been operated for several hours. Under normal circumstances, a low-speed cooling fan can adequately complete its work. However, you should also consider when selecting and installing:
u003cbru003e First of all, the selected cooling fan must be able to provide enough exhaust air (speed) to cool the hot air inside the equipment under high temperature conditions; when the temperature is relatively low and the hot air flow is relatively small, the opposite is done work.
u003cbru003e Secondly, when choosing the location of the sensor installation, you should pay attention to placing the sensor in an appropriate position and try to make the sensor directly clamped on the surface that needs to be cooled. In the operation of the cooling fan, a temperature-controlled cooling fan will run at a faster speed if the thermistor feels that the temperature is higher; while at a lower temperature, it will run at a lower speed; In the lower middle, the cooling fan speed will hardly change due to temperature.
u003cbru003e When the temperature of the cooling fan changes slowly, the speed of the cooling fan also changes slowly, and the speed and noise of the cooling fan will not suddenly change. The length of response time mainly depends on the sensitivity of its sensor to heat induction. Therefore, the speed control of the cooling fan is mainly automatically adjusted based on the temperature difference sensor transmitted by the heat sink.
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