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    DC Cooling Fan

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    12V/24V DC Cooling Fan, 40mm x 40mm x 10mm

    $19.86
    SKU: ATO-CF-DC4010
    12V/24V DC cooling fan for sale, price low, 40mm x 40mm x 10mm, high speed dc cooling fan 4000rpm, 5000rpm and 6000rpm is optional, rated current 0.03A/0.04A/0.05A/0.07A, input power 0.48W/0.72W/0.6W/0.96W/0.84W/1.2W.

    12V/24V DC Cooling Fan, 40mm x 40mm x 20mm

    $19.86
    SKU: ATO-CF-DC4020
    DC brushless fan 12v and small 24V dc cooling fan for selection, 40mm x 40mm x 20mm dimension, rated speed 5000rpm/6000rpm/7000rpm, quiet operation 24dB, high level of fire and waterproof, safe to use. Diverse interface options, bearing type oil or ball.

    12V/24V DC Cooling Fan, 50mm x 50mm x 15mm

    $25.79
    SKU: ATO-CF-DC5015
    12V DC 50mm cooling fan for sale, 50mm x 50mm x 15mm, 12 volt or 24 volt cooling fan runs quietly, bearing type oily or ball, rated current 0.06A/0.07A/0.1A/0.12A, DC cooling fans are rugged and resistant to high temperatures.

    12V/24V DC Cooling Fan, 60mm x 60mm x 15mm

    $26.89
    SKU: ATO-CF-DC6015
    Small DC cooling fan dimenson 60mm x 60mm x 15mm, 12V/24V for selection, cooling fan speed of 3000rpm/3500rpm/4000rpm, low price, smooth and efficient operation.

    12V/24V DC Cooling Fan, 60mm x 60mm x 25mm

    $26.89
    SKU: ATO-CF-DC6025
    Small DC cooling fan 60mm X 60mm X 25mm, rated voltage 12 volt or 24 volt, dc brushless cooling fan speed of 2500rpm, 3000rpm or 4000rpm, fire rating UL94V. Air flow 11.8CFM/14.1CFM/19.2CFM.

    12V/24V DC Cooling Fan, 80mm x 80mm x 25mm

    $29.89
    SKU: ATO-CF-DC8025
    12v dc brushless cooling fan, low price, 80mm x 80mm x 25mm, rated voltage 12 volt and 24 volt is optional, rated current 0.08A/0.1A/0.15A, fan speed 1800rpm/2200rpm/2800rpm. Small size and strong wind.

    12V/24V DC Cooling Fan, 92mm x 92mm x 25mm

    $36.89
    SKU: ATO-CF-DC9225
    92mm 12V DC cooling fan, dimension 92mm x 92mm x 25mm, 12V/24V DC brushless fan, bearing type oily or ball, rated current 0.07A/0.05A/0.1A, input power 0.84W/0.2W/2.4W, 1500rpm/2000rpm/2500rpm fan speed, quiet running and high quality.

    12V/24V DC Cooling Fan, 120mm x 120mm x 25mm

    $39.87
    SKU: ATO-CF-DC12020
    DC cooling fan rated voltage 12 volt or 24 volt, dimension 120mm x 120mm x 25mm, 24v 120mm cooling fan bearing oily, air flow 33.5CFM/50.2CFM/67CFM, cheap price, factory direct sales.

    12V/24V DC Cooling Fan, 140mm x 140mm x 25mm

    $59.86
    SKU: ATO-CF-DC14025
    4 inch cooling fan 12 volt for sale, lowest price 140mm x 140mm x 25mm dc cooling fan rated voltage 12V/24V, air flow 46CFM/64CFM/91.2CFM, input power 0.96W/1.2W/1.68W/4.32W, life of 35000 hours, manufacturers direct sales.

    The size of ATO DC cooling fans is from 40mm x 40mm x 10mm to 140mm x 140mm x 25mm, the price is low, the rated voltage is 12V / 24V, DC cooling fan bearing type oil or ball can be selected, and CE and UL certifications are obtained.

    DC cooling fans are widely used in industry, and can also be used in automobiles, power supplies and household equipment. Brushless DC cooling fans have the characteristics of low noise, stable operation and longer service life. You can choose from a variety of sizes and speeds.

    AC vs. DC Cooling Fan:

    Although now DC cooling fans and AC cooling fans are everywhere in life, but many people are not very clear about these fans will be. Here are five points to introduce their differences.

    • Power Supply. DC cooling fans run on direct current, while AC cooling fans run on alternating current.
    • Working Principle. The principle of a DC cooling fan is to transform electrical energy into mechanical energy to drive the blade to rotate rapidly through DC voltage and electromagnetic induction. The coil and IC are constantly switched, and the inductive magnetic ring drives the blade to rotate. The principle of ac fan is driven by AC power supply, the voltage will be positive and negative alternating, no need for circuit control, magnetic field. The frequency of power supply is fixed, and the change speed of magnetic pole generated by silicon steel plate is determined by the frequency of power supply. The higher the frequency, the faster the switching speed of magnetic field.
    • Bearing. In general, the varieties used above the radiator dispersion are: the use of sliding friction sleeve bearings and the use of rolling friction bead bearings and two kinds of bearing forms mixed these three.
    • Material. The AC cooling fan frame is usually aluminum, while the DC cooling fan frame is plastic. The high temperature resistance is different. The AC cooling fan frame is better.
    • Air Volume. For cooling fans of the same size, AC cooling fans have large motor volume and short fan blades, while DC cooling fans have small motors with long fan blades, so the wind flow driven by the unit area is more, the air volume is larger and the heat dissipation capacity is better.

    DC Cooling Fan Working Principle:

    The cooling fan is a novel machine electromechanical fan. The electromagnetic induction principle is employed. The Holzer induction element is used as a synchronous detection device, controls a set of circuits, the winding windings, generates a rotary magnetic field and implements electron-changing electronography.

    Working principle of dc cooling fanThe cooling fan is powered by DC power supply. The DC motor consists of two parts of the stator and the rotor. There is a magnetic pole in the stator, and there is a winding on the rotor. After charges, the rotor also forms a magnetic field (magnetic pole) having a corner between the magnetic poles of the stator and the rotor, which is the mutual attraction force of the stator and the rotor magnetic field under the rotation of the motor (N pole and S pole).

    Changing the position of the brush can alter the angle of the rotor magnetic pole (assuming the edge of the stator magnetic pole begins, the magnetic pole of the rotor is another aspect, and the rotor direction is pointing to the direction of the rotation of the engine). After this operation, you can change it. The direction of rotation of the machine.

    What Factors Affect Noise of DC Cooling Fan?

    Cooling fan noise

    • Speed. The faster the DC fan rotates, the bigger the fan, the louder the noise.
    • Bearings. The bearings of DC fans are briefly divided into two types, one is oil and the other is ball. Under normal circumstances, ball bearing fans are more noisy than bearing bearing fans.
    • Airflow. During the rolling of fan blades, they will encounter resistance in the air. The faster the rolling speed, the larger the blade area and the greater the resistance, so the noise will be greater.
    • Conflicting Force. If the fan is used for a long time, the fan will be excessively racked, vibrated, and the center of gravity is unstable. This will cause a collision or conflict between the fan blade and the fan frame, and then generate noise.