what is the principle
In summer, even if there is no air conditioner at home, there must be an electric fan. Electric fans are the most commonly used household appliances to cool off the heat in summer. They consume little power and can bring cool wind to people, which is very practical. When buying an electric fan, many people will look at its fan blades. I heard that it is better to buy an electric fan with a larger number of blades, because the more blades, the more wind the fan will instigate during work. So is this idea correct? Is the more blades of an electric fan the better? Let's take a look at it.
Are more fan blades better?
Compared with the ordinary "three-blade fan", the "five-blade fan" has a wider air supply range, and the number of adjustable wind gears is mostly four. It is comfortable and the noise is very low, which is very suitable for citizens who are afraid of noise when sleeping.
The air volume and wind power of the electric fan are mainly related to the motor and the fan blades of the electric fan. , Generally speaking, the more blades of an electric fan, the better the air supply effect. Although it will increase the load, the more blades there are, the more the "wind" can be cut into smaller pieces, making the blown wind softer and the mute effect better.
The "five-blade fan" mainly uses the principles of aircraft wings and propellers. The fans designed using these principles have obvious characteristics of high efficiency and low noise.
So, are "four-blade fans" and "five-blade fans" better than traditional "three-blade fans"? Some experts in the industry said that considering the characteristics of rotational balance, the blades of general electric fans are odd-numbered blades, while Fans with even-numbered blades are prone to resonance during rotation and cause damage. Therefore, the public is advised to choose electric fans with odd-numbered blades.
What is the reason for the fan blades not turning?
1. The fan motor shaft is stuck, and you can know by dialing the fan page by hand. The solution is to add lubricating oil.
2. The starting capacitor is broken, which is a black or white square plastic shell part fixed with screws at the rear of the motor. The one with two wires leads out. If you have a tool, you can measure the capacitance value. If you don't have a tool, replace it with another one. a bit.
3. The motor coil is short-circuited and burned out. Generally, when the power is turned on for a few minutes, there is only a humming sound, but it does not rotate. Unplug the power supply and touch the motor with your hand. If it is very hot, it may have been burned out and short-circuited.
Is it better to have more blades for an electric fan? To sum up, a five-blade electric fan will definitely blow more wind than a three-blade electric fan, so the electric fan has more blades for people. It will be better, when buying an electric fan, you can choose a product with 5 or 6 blades. If the fan blade of the electric fan encounters troubles during use, such as the situation that it cannot rotate or is damaged, it must be solved in a targeted manner so as not to affect the daily use of the electric fan.
