The principle of bearing fan TPI and eliminate noise technique

Fan, refers to the heat so as to take the cold wind of appliances. Electric fans, electric air installation, configuration inside fan electricity then stop running into natural wind came up to enjoy the cool effect. A major part of the electric fan is: ac motor. Its working principle is: electric coil in the magnetic field force and rotation. Energy transformation way is: electricity mainly converted into mechanical energy, and because the coil resistance, so do not prevent a local electrical energy into heat. Electric fan work ( Assume that the room without heat transfer with the outside world) Indoor temperature not only not reduced, it will rise. Let us to analyze the temperature reason: electric fan is working, due to the current passes through the fan coil, wire is resistance, so will not prevent the heat of exothermic outward, so the temperature will rise. But why do people feel the cool? Due to the human body has a lot of sweat, when after the fan works, indoor air will move, so it can promote the rapid evaporation of sweat, separation 'evaporation needs to absorb a lot of heat, so people can feel the cool. Bearing from the noise and smooth bearing fan fan TPI transfer of the main bearing components is the fan TPI, time grew to a lack of smooth oil, so when high speed rotation can produce noise. Therefore, we only need the fan TPI smooth add a few drops of oil on the bearing, if do not have alternative can also use a sewing machine. But take care never to use cooking oil to replace, because of its large particles compare, TPI to fan bearing damage. Second, fixed blade vibration noise also is an important component of fan noise is local, as a result of the blade on the TPI bearing looseness and TPI bearing wear incurred and larger gap, thus needs to be removed only the fan, the screw knob tightly, this prison after the strong, won't vibrate. Three, dozen MoShan leaf also use poor quality of the cooling fan, when manufacturing this kind of fan because of shortfalls in the process, on the axis of center of gravity may not be in blade, constitute a 'eccentric', use a long time, fan 'eccentric' phenomenon becomes more and more serious, it not only can produce noise, serious still can damage the CPU. To this, can be removed, and then use thin lines at its center position, after waiting for the static see its sinking, towards which the sinking on the grinding wheel light at the end of the ground a few times, again to stop testing, constantly after fan can be in position to the degree of the device up again can.