High speed brushless motor hair dryer. Regarding this high-speed brushless motor, several brands have developed benchmark products. Let me first introduce the innovation of hair dryer products brought by this motor.
【High speed】
This must be familiar to everyone. At present, all merchants who have developed this product have integrated this number into the selling point of product marketing. 110,000 rpm has also become a benchmark. It seems that only when this number is reached can it be called a high-speed brushless hair dryer.
【Wind leaves shrink】
Due to the obvious increase in speed, the result is not only an intuitively more effective increase. At the same time, as the rotating speed increases, the volume of the fan blades can also be reduced accordingly, so as to achieve sufficient air output. You can recall that even if it is Dyson, the effect of external publicity will not be much faster than other professional hair dryers. This shows from the side, in fact, in terms of air output, even if the motor speed is increased several times, the overall difference in air output will not be particularly large. But reducing the volume of the fan blade can be said to be revolutionary for hair dryers.
l After the size of the fan blades is reduced, the overall size of the hair dryer can be further reduced. For hair dryer products, the size of the motor is far less restrictive than that of the fan blades. The volume of the fan blades is closely related to the air volume, which is why small hair dryers cannot effectively dry hair.
l After the size of the fan blade is reduced, the installation position of the motor can actually be greatly changed. That's why, Dyson's hair dryer design puts the motor at the handle.
【Motor installation position】
The last part talked about the change of the installation position of the motor and fan blades. In fact, for hair dryers, it is also the two major problems criticized by users of hair dryer products for a long time.
l The weight balance of the head and handle. In traditional hair dryer products, since the motor, fan blades and heating wire are all on the head, the only position of the handle is the circuit board. This will inevitably cause the problem of "top-heavy". After a long time of use, the user will easily feel very tired.
l Changes to the air duct of the air outlet. Traditional hair dryers use a streamlined cavity to pressurize, so the air output is guaranteed. However, Dyson's windless leaf design not only has unique additional marketing points such as "safety" and "unique shape ID". More importantly, the fanless design actually has a small inner hook design on the air outlet, which further increases the wind pressure and obtains a better user experience.
I also participated in the research and development of high-speed brushless fans recently, and recommends the OT-EFS2831 motor to everyone. Here, Lao Zhang will give you some hidden minefields when selecting the type of this motor.
【Single-phase/Three-phase】
First of all, this motor uses single-phase, do not choose three-phase. The reason is actually very simple, don't worship numbers, the no-load speed of 11000 actually does not bring practical results. After the three-phase motor is often equipped with fan blades (after the load is added), the speed will drop significantly. In this way, the overall effect of the motor is not well reflected. Single-phase motors do not have this problem.
[with/without drive]
At present, most of those who use this motor hope to use it to match high-end hair dryers. Therefore, when selecting the motor, it is necessary to consider the functional orientation of the motor drive and the hair dryer. At present, the driver needs to be able to connect heating wires, negative ions, temperature control, cold wind gear, and wind speed control. Therefore, when you decide to choose high-speed brushless, you need a driver that can satisfy these functions of the hair dryer at the same time.
【Up-frequency noise reduction】
Up-frequency noise reduction is actually simple, because there is a certain range of sounds that can be heard by the human ear. For specific information, you can refer to the part about motor noise written by Lao Zhang. Then the high-speed brushless motor also has a very big advantage because of the speed, that is, after the speed becomes higher, the frequency of the sound wave can be increased to above 20,000Hz, so that the generated noise cannot be received by the human ear, but it plays a role in noise reduction. effect.
