AC230V Fans
(1 000)Fans are used in places and devices where airflow has to be forced artificially, for example to extract excessive heat from heat sinks by pumping cool or hot air. Examples of devices and rooms where fans are used include computers, voltage converters, production halls, cold rooms and many others.
Fans – Popular types of fans and their purpose.
230V radial blower fan
In fans of this type, air is sucked in through an opening in the axis of fan rotation and then pumped through an outlet, for example to cool a commutator of a high-power electric motor. They are often called industrial “blowers”. Fans of this type are characterized by high performance at the expense of relatively low energy conversion efficiency. They are used in heating, ventilation and air-conditioning systems, as well as for cooling machines and other devices whose operation requires an efficient fan.
230V axial fan
Thanks to their design, axial fans can operate almost continuously. This makes them a perfect choice for industrial applications. They are more silent than other devices of this type and also offer high efficiency of the pumped air. They are used in ventilation systems of rooms and chambers, drying rooms, as well as hazardous fume extractors.
Fans – Information and parameters.
Fan efficiency – is the volume of air, counted in cubic metres (metric units) or litres (imperial units), which the fan pumps in the time unit counted in hours.
RPM – number of revolutions the fan rotor performs in one minute.
Type of bearing – sliding bearings and ball bearings are applied. The first type is more silent and quite durable. Ball bearings provide even longer life, but generate more noise.
Pressure – fans generate various levels of pressure. Due to this parameter, we can divide them into:
- Low-pressure fans, capable of compressing air up to 700 Pa (radial and axial designs).
- Medium-pressure fans, from 700÷3600 Pa (radial and axial designs).
- High-pressure fans, from 3600 Pa and more (radial designs).
Energy conversion efficiency – this parameter determines what percentage of electricity is converted into pressure generated by the fan. The highest efficiency is achieved by fans fitted with EC motors.
Noise level – this is the value of the noise generated by the fan. It is the relative pressure level in dB(A), scaled according to a curve that is equivalent to the sensitivity of the human ear for different frequencies. In this way, a value of sound pressure is obtained that corresponds to the human auditory sensation while the fan is operating.
Power consumption – power, in watts, consumed by the fan during its operation.
Supply voltage frequency – due to the different supply voltage frequency in some countries, we distinguish between 50Hz and 60Hz. Usually, a given fan model can operate at both of these values, but with their change, in the absence of speed control, fans can operate at different speeds.
Type of fan and supply voltage – we can distinguish between AC fans supplied with 115V, 230V and 400V AC, and DC fans supplied with 3V DC in the case of miniature fans, and 5V, 12V, 24V or 48V for larger fans.
Fans – Different number of fan connection leads.
Fans with a 2-wire connection do not have a speed sensor, and their speed can only be controlled by changing the supply voltage. This is usually done by means of a regulated resistance, resulting in losses of energy converted into heat.
Fans with a 3-wire connection are equipped with a Hall sensor, which allows to read out the current rotational speed.
Fans with a 4-wire connection allow both speed reading and speed control with PWM, without the need to change the supply voltage. Thanks to this solution, we can regulate their speed, without unnecessary heat losses emitted on the secondary resistance, where excessive supply voltage is accumulated.
Wide range of fans available at TME.
TME offer includes fans in a wide range of sizes, including small fans (60x60x25mm), as well as bigger ones, up to 170x151x51mm, offering various efficiency, noise level, speed, as well as supply voltage. TME offers both DC fans and 230V fans supplied from the mains voltage and fans for control cabinets manufactured by Stego, Rittal and Weidmuller.
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