With the continuous development of science and technology, people's requirements for the use of Traditional Ceiling Fans are getting higher and higher. As far as the current development trend of foreign Traditional Ceiling Fans technology is concerned, it will follow the continuous increase in capacity, high efficiency, high-speed miniaturization and low-cost of Traditional Ceiling Fans. The direction of noise development, the Traditional Ceiling Fans Industrial Fans is along this direction.
The capacity of Traditional Ceiling Fans continues to increase. The increasing scale of various industrial installations objectively requires the capacity of various Traditional Ceiling Fans to increase accordingly. Traditional Ceiling Fans with large models will be popular in the market in the next few years.
Low noise. The noise of Traditional Ceiling Fans is one of the main sources of noise pollution in industrial production. The increase in size and speed of Traditional Ceiling Fans makes the noise problem very prominent. For low-frequency noise, the Traditional Ceiling Fans mainly reduces the body noise by improving the structure design of the Traditional Ceiling Fans. If the requirements cannot be met, measures such as installing a muffler can be taken.
To sum up, these technologies are not only the future development trend of foreign Traditional Ceiling Fans, but also the technical direction of the domestic Traditional Ceiling Fans industry.
The shape of the fan blades also has a great influence on the efficiency of the fan. The shape of the fan blade directly affects the vortex intensity near the blade, thereby affecting the efficiency of the fan. Therefore, improving the shape of the blade so that it has a better streamline and a suitable bending angle will not only help reduce eddy current noise, but also greatly improve fan efficiency.
The test shows that the blade material of the fan also has a certain degree of influence on its noise. For example, the blade of cast aluminum is less noisy than the blade of stamped steel plate, and the blade of nylon is less noisy than the blade of metal. Generally speaking, the larger the loss coefficient of a material, the smaller its noise.
Increasing the number of blades of the fan can increase the air volume of the fan under the condition of constant speed. Or on the premise of obtaining the same air volume, the fan speed can be reduced, thereby reducing the fan noise. However, when the number of blades is more than 6, increasing the number of blades increases the air volume to a limited extent, and often has a negative effect on noise reduction characteristics.
The low-speed wide-blade fan and the high-speed narrow-blade fan have the same air volume, the noise sound pressure level of the former is 4dB(A) lower than that of the latter, and the power consumption is reduced by 27%. Reduce the gap between the fan and the windshield to prevent airflow disturbance and reduce fan noise. Tests show that when the gap is zero, the air volume increases by 27%, while the noise decreases by 3dB(A), and the noise can be reduced by 2dB(A) again when the speed is reduced to bring the air volume back to the original level.
