In summer, when the weather is not too hot, most people choose to use electric fans diligently at home. So, how much do you know about the blades of electrical fan mould ?
The working principle of the fan blades: When the electric fan rotates, the inclined blades will continuously squeeze the air from front to back and shear the air to generate wind. When the fan blades rotate, centrifugal force is generated, so the centrifugal force generates wind and is guided by the fan blades. When the fan blades form an angle of 45 degrees with the centerline, the wind speed is the highest and the wind direction is the most dispersed, at 90 degrees.
From a mechanical point of view, the number of blades is usually an odd number, and most use 3 or 5 blades. Odd-numbered blades will form an asymmetric resultant force. When one blade does not have dynamic potential energy, the other blades are in a potential energy state. A blade with potential energy can easily drive a blade without potential energy temporarily, which is beneficial to power saving.
The maximum size of Midea fan blades is ø335.50mmx 42.30mm, the average thickness of plastic parts is 3.20mm, the material of plastic parts is PP, and the shrinkage rate is 1.008. In the center of the plastic part, a stainless steel insert is designed, which is integrated with the plastic part to improve wear resistance. The technical requirements for plastic parts are that there must be no peaks, injection failures, streamlines, pores, warpage deformation, silver streaks, cold materials, injection lines, bubbles and other defects, and no mold release agent shall be used. Plastic parts are being molded.
In fact, when we choose some household appliances, the first thing we have to look at is the electrical appliance mould . If even the mold is not good, then most of the household appliances produced should also be bad, so the mold is very important.