Okorder.com is a professional and reliable online E-market place
Providing a variety of products with reasonable prices
High quality goods provided by factory suppliers
Shipping to over 200 countries.
Dubai Logistic Complex
Okorder Quality Control?
We hold a very strict quality control system to check every connector of our products for your safety.
Okorder services for you
1. We will reply you in detail within 24 hours
2. We own well-trained and professional sales and after- sale services who can speak fluent English.
3. We offer OEM services and can print your own logo on products.
4. We have strong ability to do ODM projects.
Send a message to us:
Q:What is the principle of a vaneless fan?
The base will be a large amount of air from the suction hole at the bottom of the 5.28 gallons per second flow inhalation, then the air is pressurized into the annular inner wall, an impeller inside the edge of the ring in the air circular trajectory jet, change the air flow will cause the air pressure, and ultimately the formation of a cold air flow shares uninterrupted
Q:What is the working principle of an electric fan?
When the electric fan works, because the electric current passes through the coil of the fan, the wire is provided with resistance, so it will inevitably generate heat and release heat outwards, and the temperature will rise naturally.
Q:Why does the fan seem to spin backwards when it spins?
Because the human eye to object displacement to distinguish between 0.1s, and 0.1s when the fan turn fast may turn 350 degrees, looks like reversal of 10 degrees, so add up, like upside down
Q:What are your misunderstanding blowing ？
Some people in order to cool as soon as possible, then the fan to the highest speed, that the wind big fun, antipyretic. That's not the right thing to do
Q:How was the electric fan invented?
In 1880, Americans for the first time Shule blade is directly mounted on the motor, and then connected to the power supply, the rapid rotation of blades, the cool breeze blowing, this is the world's first electric fan.
Q:How to do if the electric fan is noisy?
Fan leaves may be dirty or deformed, and the center of gravity of the fan leaves is not in the center, which makes it easy to shake and make noise.
Q:What is the problem of slow fan speed?
The inside of the shaft is stuck and needs lubrication
Q:How to measure the speed of an electric fan conveniently and precisely?
If you have a variable frequency light, you can gradually increase the frequency until the first fan page is almost stationary, and then multiply by three to calculate the speed
Q:What are the types of electric fans?
According to the structure of the motor can be divided into: a single-phase capacitor type single-phase, three-phase, shaded pole induction, DC and AC / DC series excitation commutator type electric fan.
Q:Where does the wind from the electric fan come from?
At the same time, the air velocity of the diagonal line must be faster than that of the straight line, causing the air pressure on both sides to vary. The air flowing along the straight line flows to the side of the air where the wind is formed