Auto cooling fans think standard

Auto cooling fan is used to work in the car and the cooling device, it analyses the energy conversion so as to realize the function of the car cooling process is: the electrical energy is converted into electromagnetic energy, electromagnetic energy into mechanical energy, mechanical energy is converted into kinetic energy.
it's fan types are: the axial flow fan, centrifugal fan, mixed flow fans, tubular fan this several.
its bearing structure is: the ball bearing ( Adopts rolling friction) And oil bearing ( Use flattering friction drive bearing operation) , magnetic levitation bearing ( Using the magnetic drive rotor operation) 。
it technical considerations are: air ( Refers to the cooling fan in air volume per minute) , wind pressure ( Air pressure and air volume produce positive and negative effect) , fan speed ( Refers to the number of rotating fan blades 1 minute) , fan noise ( Affected by friction, air flow) These indicators.