At present, foreign wind turbine technology develops in the direction of "four"
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- Large fan capacity continues to increase. With the large-scale development of various industrial devices, the capacity of various types of fans required is also increasing, and large-sized fans will increase in the market in the coming years.
- Efficient. In order to improve efficiency, the three-dimensional flow impeller has been more and more widely used in ventilators. Other special-purpose fans such as diagonal fans will be more marketable.
- High-speed miniaturization. After all kinds of fans adopt the three-dimensional flow impeller, the pressure can also be increased while increasing the efficiency. Therefore, under the same conditions, the outer diameter of the impeller can be reduced by 10% to 30%, so that the obvious effect of reducing the size and weight is achieved. Increasing the speed is also one of the important ways to miniaturize the fan.
- Low noise. Fan noise is one of the most important sources of noise pollution in industrial production. The large-scale and high-speed fan has made the noise problem more prominent. For low-frequency noise, the fan is mainly designed to improve the structure of the fan to reduce the noise of the body. If it fails to meet the requirements, it can be equipped with mufflers and other measures.
To sum up, these technologies are not only the future development trend of foreign fans, but also the technical direction of the domestic fan industry.