What is the cause of the noise produced by the chiller fan?

Noise is a kind of annoying sound, continuous noise, but also make the surrounding environment suffer from pollution. General chiller fan noise causes can be divided into the following:

When the blade rotates, it will cause friction with the air, or impact. The frequency of noise is composed of a variety of frequencies, which are related to the speed of the chiller fan.

Suggestion: If the axial fan has a dynamic wing and a static wing configuration, the number of blades of the two is better not equal, so as to avoid greater noise resonance.

Noise is also generated when the blades produce eddy currents. During the operation of the fan, the back of the moving wing will produce eddy currents, which will not only reduce the efficiency of the fan, but also produce noise. In order to reduce this phenomenon, the installation Angle of the blade should not be too large, and the bending of the blade should be smooth, and should not suddenly change too much.

It resonates with the air duct housing and produces noise. The inner joint of the air duct and the fan shell should be smooth to avoid roughness and roughness, causing tearing sound. In addition, in the design, it is sometimes possible to cover the outside of the air duct with sound prevention materials, which can reduce noise.

In addition, in addition to the fixed noise of the fan itself, there are many noise sources. Such as: bearings due to lack of precision, improper assembly or poor maintenance will cause abnormal noise. Motor parts can also produce noise, some caused by poor design or poor manufacturing control, but sometimes caused by the internal and external cooling fan of the motor. Therefore, in the selection of equipment must strictly carry out the selection of regular products, considering the humanized design of equipment and other factors.

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Shanghai Shangyu adhering to the "heart to work, wholehearted service" service concept, adhere to the "people-oriented, scientific and environmental protection" business philosophy, continue to develop more suitable for the market, can meet customer needs of refrigeration products, strict and effective pre-sales, after-sales service, adhere to the quality and innovation as the starting point of corporate behavior, Shangyu people will adhere to the spirit we have been working hard, Lay a solid foundation for the company to develop into an internationally competitive company.