This doesn't save much electricity! Can be ignored.
Since the blades of the electric fan are balanced and the shaft, whether iron or plastic, is in the middle, the power consumption after rotation depends mainly on the wind. resistance. If the shape and angle of the blades are the same and the rotation speed is the same, the air volume will be the same, the wind resistance will be the same, therefore the power consumption will be exactly the same.
The only difference is that iron blades are heavier and have greater inertia. It takes a little longer to reach a stable speed when starting, so the power consumption is a little higher. The more you turn it on and off, the bigger the difference, but we don't turn it on multiple times a day at all, so the difference in power consumption is almost negligible.
Today's fans are madekilled from plastic blades because they are cheap, mainly to reduce manufacturing costs.
The louvers of fan and duct machine are made of PE plastic.
1. In terms of popularity, PE plastic fan duct machine louvers have more consumers; Stainless steel fan duct machine louvers have less popularity.
2. In terms of quality, PE plastic for fan and duct machine louvers adopts the most advanced technology and is wear-resistant; the louver of fan and duct machine is made of stainless steel, but the technology is immature.