How to judge the quality of the fan

Update:05-03-2021
Summary:

The quality of the fan has always been of concern to us […]

The quality of the fan has always been of concern to users. A fan of good quality can reduce a lot of unnecessary troubles in future use. Therefore, in the process of selecting a fan, the user's first concern is the quality of the fan. , But in the face of a variety of misting fans types, how should users judge whether the quality of the selected fan meets the requirements? Let's take a look at several common points common to high-quality fans.
We all know that when choosing a fan, the most important thing is the flow rate, wind pressure, speed and efficiency of the fan. Under the same conditions, the impeller is an important factor that reflects the processing level and quality of the high-pressure fan. When choosing a high-pressure fan, you must start from many aspects.


The difference of the wind blade is mainly reflected in its shape and geometric size. After partial magnification, it can be seen that the cutting amount of each tooth of the wind blade is obviously uneven, indicating that the end face is not perpendicular to the axis, resulting in that all blades of the entire wind blade are not one On the vertical plane, the airflow of the blades is not balanced when rotating, which reduces the efficiency of the fan. Therefore, do not choose a fan with such a problem. In the detection of high-pressure fans, three-dimensional laser scanning is the most widely used non-contact measurement method. Although three-dimensional laser scanning cannot reach the accuracy level of three-coordinate measurement technology, its measurement speed is fast, the measurement range is large, and it can be accurate. Measure the three-dimensional contour data of various complex parts. When performing error analysis on the overall wind blade, it is necessary to collect the data of the entire wind blade, which has a large amount of information and many and complicated measurement data. Therefore, three-dimensional laser scanning measurement is adopted. The uneven processing of the end face of the wind blade results in uneven clearance between the wind blade and the fan casing (mainly the wind cover and the wind barrel), and the gap also has a certain influence on the performance. Within the scope of design work, the gap has a greater impact on efficiency and energy head.
It can be seen that there are many selection criteria for fans, and the effects achieved by different standards are also different. Therefore, when choosing a fan, users must clearly know what effect and purpose they want to achieve when choosing a fan, so choose It is also more convenient, and the selected fan on this basis can also be guaranteed to a certain extent.

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