Five-leaf bath ventilator fans, by the Northwestern Polytechnic University aerodynamics expert Professor Sidko use the aircraft wings, propeller principle, to explore a set of the best fan blade bend, sweep angle, the most favorable center of gravity line shape and Blade plane shape. Using these fan design techniques, the design of the fan has a significant high efficiency, low noise characteristics.
As the "cut" the wind is more uniform, the use of "five leaves" of the fan not only brings a mute effect, from the comfort point of view also more choices. Fan fan can be achieved when a wider range of multi-block adjustment. Most of the "three leaf fan" is basically a third block of wind regulation, "five leaf heater with fans" can be more than a block.
Especially in the lower operation of the block, the air is not very violent, you can avoid the fan blowing easy to cool the problem, and from the energy point of view is still very good. It is understood that the United States, "five leaves mute" electric fans as an example, energy efficiency standards can be achieved 1 16 talent platform fan air volume than the national standard increased by 27%, noise than the national standard reduced 15.8%; click power is also reduced 11.4%, energy efficiency ratio increased by 24%.