文章來源： 作者：羅茨機電 發布時間：2022-03-09 瀏覽次數：480
The efficiency, noise, power consumption and size comparison speed c of forward and backward inclined blade centrifugal fan is greater than that of backward inclined blade, so the kinetic energy of air flow is converted into pressure energy in the spiral cavity. The loss is also large, so the proportion of static head used to overcome system resistance is relatively small. The speed c transmitted by the backward inclined blade to the air flow is small, so the loss of air flow in the conversion is small, so the static pressure head used to overcome the system resistance accounts for a large proportion. Let's find out what factors should be considered in the selection of centrifugal induced draft fan equipment?
Consider power consumption; It can be seen from the above that the fan efficiency directly affects the shaft power of the fan. The rear blade fan has high efficiency, small shaft power required by the fan and low power consumption. The efficiency of forward inclined blade fan is low, the shaft power required by the fan is large, and the power consumption is more. Because the speed transmitted by the forward inclined blade to the air flow is greater than that of the backward inclined blade, the greater the loss of air flow in the conversion process, the faster the collision between the air flow and the casing, and the channel curvature of the backward inclined blade is gentle and the air flow is relatively smooth. Therefore, the noise of the forward inclined blade fan is greater than that of the backward inclined blade fan.
2. Consider the size of the fuselage; The product of the flow coefficient and pressure coefficient of the fan is often used to measure the size of the fan body, so the front blade fan is smaller than the rear blade body. The passage in the backward inclined blade fan is generally gradually expanded, and the passage expansion of the forward inclined blade is relatively mild. In addition, the curvature of the backward inclined blade is less than that of the forward inclined blade, so the hydraulic loss of the air flow flowing in the backward inclined blade channel is less than that of the forward inclined blade. The main working parameter is the air volume. The output pressure changes with the pipeline and load, and the air volume changes very little. The drum fan is variable volume compression, which is mainly characterized by low speed, low vibration, high efficiency and more energy saving.
In a word, the factors to be considered in selecting centrifugal induced draft fan equipment include power consumption and body size. The fan with backward inclined blade is more efficient than that with forward inclined blade. Through the analysis of forward inclined and backward inclined blade fans, it is considered that when selecting fans, in addition to the size of fan body, equipment procurement cost, floor area, etc. In addition to the initial investment, it is also necessary to have a sufficient understanding of the operation and management costs such as fan efficiency and power consumption.
The above is the detailed introduction of Shaanxi centrifugal fan manufacturers. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.makemoore.com