Is it better to have more blades with electric fan?
Fan blade number is generally an odd number of, because when doing dynamic balance correction, taking into account the characteristics of the rotational balance, odd number of blades is easier to correct the centre of rotation, when the number of blades for an even number, it is easy to produce resonance, if the blade material is poor, can not bear the force generated by vibration, the blade or bearing is easy to break, so the axis of asymmetric fan blade number for an odd number of more suitable.
Generally, electric fans have a three-blade fan. The triangular shape is the most stable, and the three blades allow the fan to operate with as much balance as possible. In terms of mechanics, a three-blade fan saves electricity and energy. An excessive number of blades increases the cost of the product, while a three-blade fan can be manufactured at a more moderate cost. At the same time, three-blade fans have higher air speeds and are more powerful than four or five-blade fans. When powerful, a three-blade fan is noisier than other fans with a higher number of blades.
Four-bladed fans tend to resonate as they rotate, so they are less often produced.
The five-bladed fan has a smaller single blade area and a smaller range of action with the air, resulting in less vibration during use, so the noise generated is lower compared to a three-bladed fan and the silence is better.
The more fan blades there are, the smaller the "wind" can be cut into smaller pieces, making the wind more natural and comfortable, and the better the air delivery effect. But the more blades an electric fan has, the more energy it consumes. The load increases as the number of blades increases. A five-bladed fan is also the ideal fan if manufacturing costs and energy consumption are not taken into account.
Double-layered fan blades are also becoming prevalent, with the inner ring of soft breeze colliding with the outer ring of strong breeze to achieve the effect of eliminating turbines, making for a more even and delicate cut of wind and a better sense of soft natural breeze, but the air output is not as large as the ordinary fan also blades.
The number of blades varies depending on the function and effectiveness of the fan. The most important thing is to be clear about the effect you want the fan to give you, so we can choose the number of blades in terms of energy consumption and effectiveness.
In terms of energy efficiency it is still very practical to choose a three-blade fan with low energy consumption. For silence and comfort, a five-blade fan with a high number of blades is preferred.
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Foshan Shining Electrical Appliance Co., Ltd.
