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The principle of the temperature control fan is: According to the Heat around the fan to increase the speed of the DC fan, while increasing air flow (exhaust). The thermostat fan uses an electric conditioner to induce temperature, and the sensor mounted on the fan hub detects the temperature of the fan. The fan must be properly installed in this configuration, and when the fan is installed, the electric heater can be sensed through a special connection wire.
The fan operation is changed with the heat condition, at a slower speed, the fan will produce less noise and consume less energy. In most design requirements, the air temperature is usually lower than the maximum design temperature for several hours after the fan has been running faster. Under normal circumstances, the low-speed running cooling fan can do its job enough.
However, in the selection and installation should also consider: first of all, the selected fan must be able to provide sufficient exhaust air (speed), in the case of high temperature cooling equipment inside the hot air; When the temperature is low and the heat flow is less than the opposite work. Secondly, in the location of the sensor installation should be noted, the sensor placed in the appropriate position, as far as possible to make the sensor can be directly clamped on the need to cool the surface. In operation, a temperature-controlled fan, if the electric regulator feels the temperature is higher when it will be running at a faster speed, but at low temperature, will be at a lower speed, in these higher and lower middle, the fan speed will be almost no change due to temperature. When the fan temperature changes slowly, the fan speed changes also slower, does not suddenly change the fan speed and noise. The length of reaction time depends largely on the sensitivity of its inductor to thermal induction.