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Q:What is the working principle of an electric fan?
The main components of the electric fan are: AC motor. The working principle is that the energized coil rotates under the force of the magnetic field. Electrical energy is converted to mechanical energy, and, at the same time, due to coil resistance, it is inevitable that some of the electrical energy is converted into heat energy.
Q:What is the function of the fan blade?
Fewer leaves are likely to produce greater wind pressure, but the noise is greater, while the number of leaves is the opposite
Q:Why does the fan seem to spin backwards when it spins?
This is the reason that the wheel looks stationary, when the frequency of the fan's rotation is related to the maximum frequency that the human eye can tell.
Q:What are the types of electric fans?
According to the use of classification can be divided into: domestic fan and industrial exhaust fan
Q:Which items should we pay attention to selecting electric fans?
Appearance quality requirements, modeling, lines, colors, beautiful and generous. Electroplating requirements smooth and glossy, no yellow, no rust, peel and water phenomenon.
Q:How do you use an electric fan to set up an air distribution system in an air tight room?
In the absence of outdoor airflow, the warm air is lighter than the cold air. From a hydrostatic point of view, the temperature difference brings air stratification in the vertical direction
Q:How to measure the quality of fan motors with digital multimeter?
The digital multimeter stalls on 2K ohm ohm, single-phase AC fan motor is 220V, starting with starting capacitor, motor has two windings, a starting winding, a winding is running; the starting winding resistance, running small winding resistance.
Q:What are the common faults of electric fans?
If it is due to electrical fault, you can check the wiring of the wiring, and sometimes wire damage, etc., can be repaired on the problem.
Q:What is the difference between air conditioner speed regulation and electric fan speed regulation?
The difference between them is reflected in the range of speed regulation with a fixed torque load. Two, the motor efficiency is reflected at different speeds. Three, the torque is expressed at different speeds.
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