Industrial Stand Fan 18 Inch 3 in 1

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Q: Where does the wind from the electric fan come from?: The air passes through the fan blade, because it is oblique, and when the air passes, the fan leaves the air straight, while the other side takes a diagonal line with the blade

Q: What is the difference between the natural wind and the sleeping wind?: The wind began to sleep by the strong wind, gradually reduce wind strength, meet people's physiological needs

Q: Why not head fan to blow?: The electric fan blowing directly to local head, by cooling the blood flow slowed down, while the other half blood flow in normal operation, the head of poor blood flow, causing brain nerve oppression, brain rich and complex, directly transmitted to the pain receptors, so it is easier to feel a headache.

Q: How to measure the quality of fan motors with digital multimeter?: In the multimeter stalls placed in the 20M file, measuring winding (using the motor three lines in any one) and the motor stator core insulation resistance, the resistance should be above 2M, can determine the motor only problem

Q: What is the difference between air conditioner speed regulation and electric fan speed regulation?: Inverter air conditioners and fans are asynchronous motors (not sure if there are any other types, but common ones). The fan is single-phase and the air conditioner is multiphase.

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 is an electric fan?: A common household fan essentially belongs to an axial fan, i.e., the direction of the wind is parallel to the rotating axis of the fan blade

Q: When did the electric fan start to appear?: 25 years later, Ecclestone engine and electrical company in the United States, and developed the world's first electric fan gear driven around the head

Q: Does the fan blow the door open or closed?: If there is a natural wind. The wind blowing fan should pay attention to the natural wind, not to blow