Fan TPI bearing principle and noise removal of skills - bearing knowledge

Fan, refers to the heat so as to take the cold wind of appliances. Electric fans, electric driven air device, the configuration of the fan power then turn into the effect of natural wind to cool. A major part of the electric fan is: ac motor. Its working principle is: electric coil in the magnetic field force and rotation. Energy conversion form is: electricity mainly converted into mechanical energy, and because the coil resistance, so inevitably there is a part of the electrical energy into heat. Electric fan work ( Assume that the room without heat transfer with the outside world) Indoor temperature has not reduced, it will rise. Let us to analyze the reasons of temperature rise: electric fan is working, due to the current through the fan coil, wire is resistance, so will inevitably produce heat to heat, so the temperature will rise. But why do people feel wool-like fabric? Because the body's surface have a lot of sweat, when after the fan works, indoor air is flowing, so it can promote the rapid evaporation of sweat, combined with the 'evaporation need to absorb a lot of heat, so people will feel cool. Remove the noise, fan TPI bearing lubrication bearing fan transshipment of the main bearing components is the fan TPI, time grew to a lack of lubricating oil, so when high speed rotation can produce noise. So we just need to drop a few drops of oil on fan TPI bearing, if there is no use sewing machine also can replace. But note that don't use cooking oil to replace, because of its grain is bigger, easy to fan TPI bearing damage. Second, fixed blade vibration noise of the fan noise is also an important part of, because the blade on the TPI bearing looseness and TPI bearing wear and larger gap, so you just need to remove the door, put the screw knob tightly, this firmly fixed, won't vibrate. Three, dozen MoShan leaf separately using poor quality of cooling fans, when making this type of fan because of shortfalls in the process, on the axis of center of gravity may not be in blade, form 'eccentric', use a long time, fan 'eccentric' phenomenon becomes more and more serious, which not only can produce noise, serious still can damage the CPU. To this, can be removed, and then use thin line hanging in the central place, 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, test again, can stay fan in a horizontal position then install it on them.