Airflow silencing and guiding device for aerodynamic device

Abstract

The invention discloses an airflow silencing and guiding device for an aerodynamic device. The airflow silencing and guiding device for the aerodynamic device comprises a flow guiding mechanism and asilencing mechanism. The flow guiding mechanism comprises multiple grades of flow-guiding and silencing cones, a locating support assembly, a protective cover and a butt flange. The multiple grades offlow-guiding and silencing cones are vertically overlaid and in clearance type distribution. The locating support assembly comprises multiple supporting rods and a joint ring. The protective cover covers the multiple grades of flow-guiding and silencing cones. The lower end of the butt flange is connected with the silencing mechanism. The silencing mechanism comprises a silencing body and a silencing cylinder. The silencing body is located in the silencing cylinder, and an interval exists between the silencing body and the silencing cylinder and forms a ventilation channel. Airflow is fed into the protective cover from the periphery via ventilation holes on the protective cover, after the airflow passes by the flow-guiding cones, annular airflow is formed and rapidly enters the ventilation channel, and when the airflow passes through the ventilation channel, by means of the silencing cylinder and the silencing body which constitute the two sides of the ventilation channel, noise is effectively lowered.

Description

technical field [0001] The invention relates to the technical field of aerodynamic noise prevention and control, in particular to an airflow noise reduction and guiding device for aerodynamic equipment. Background technique [0002] With the development of industry, the creation and use of various mechanical equipment has brought prosperity and progress to human beings, and the material living standards of human beings have been greatly improved and improved, but at the same time more and more powerful noise. Being in a noisy environment for a long time will make people deaf, and may also cause diseases such as high blood pressure and heart disease; it will seriously affect people's physical and mental health, increase people's troubles, and reduce people's quality of life and work efficiency. [0003] At present, in subways, tunnels, mining and other fields, in order to eliminate harmful gases, most of them use high-power fans, which generate a lot of noise. Therefore, it ...

AI Technical Summary

Problems solved by technology

Among them, the high-end products have better noise reduction effect, but the structural design is complicated, the manufacturing and debugging requirements are high, and the body size is relatively large, resulting in expensive noise reduction devices and inconvenient installation, which cannot be widely used in actual use.

[0005] The low-end products of the noise reduction device have a simple design and structure, and the price is cheap, but the durability is poor and the noise reduction effect is not good

At the same time, the fan will generate additional noise, and will also generate additional energy consumption and maintenance costs for the fan

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