不考虑超大吊扇的配置与制造水准,仅就风效来说,衡量超大吊扇优劣的指标应该是可比条件(同等转速,同等直径)下产生的风量和覆盖面积.
随着技术进步, 高风效叶片可以较少的叶片数量产生同等数量,甚至更多的风量. 正如当今的汽车工业, 汽车发动机的排量逐渐向小型化发展, 但是发动机功率和扭力仍然足以驱动大质量的汽车. 同理,只要产生相等的风量,相同的风扇覆盖面积, 那么叶片的数量越少，说明其风扇叶片的风效率越高. 即使从节约资源和保护环境出发, 也应该鼓励较少的叶片数量.
斯柯特的冲压工艺制造的叶片不同于其他同行的挤出式制造工艺的叶片, 它的叶片沿半径方向逐渐变窄,变薄和略为扭曲, 这几个特性使得它可以在同等条件下产生更大的风量。
我们知道,在同等转速条件下, 沿半径方向叶片各点的线速度差异极大, 以直径7.3米的超大吊扇举例，叶尖部分的线速度是叶根部分的7倍. 如此大的速度差异如果采用等宽度的挤出式叶片, 必然导致线速度很低的叶根部分风效率极低, 通常会形成中心空洞现象。
Regardless of the configuration and manufacturing level of Super large ceiling fans, only in terms of wind effects, the indicator for measuring the advantages and disadvantages of Super large ceiling fans should be the amount of wind and coverage produced under comparable conditions(equivalent speed, equal diameter).
As technology advances, wind-efficient leaves can produce the same number of leaves or even more wind. Like today's automotive industry, car engine emissions have gradually become miniaturized, but engine power and torque are still enough to drive large-quality cars. Similarly, as long as the same amount of wind is generated and the same fan coverage area is used, the smaller the number of blades, the higher the wind efficiency of the fan blades. Even in order to save resources and protect the environment, we should encourage fewer leaves.
The blades manufactured by Sikete's stamping process are different from those of other extruding manufacturing processes. Its blades gradually narrow along the radius direction, become thinner and slightly distorted. These characteristics allow it to produce under the same conditions. Greater wind volume.
We know that under the same speed conditions, the line speed of each point along the radius direction of the blade varies greatly. For example, an oversized ceiling fan with a diameter of 7.3 meters, the line speed of the tip part is 7 times that of the root part. Such a large speed difference, if an equal-width extruding blade is used, will inevitably lead to extremely low wind efficiency in the root part of the leaf with very low line speed, and will usually form a central hollow phenomenon.
The leaf width of the leaf root of Sikete's leaves is very wide, and the blade width of the blade with a very low online speed is very wide. The blade width of the leaf tip with a high online speed is relatively narrow, and the blade with a high line speed is used. Wind. In this way, the problem of uneven radial air supply of leaves is improved significantly, and the wind efficiency of leaves is improved.
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