With the continuous development of China's national economy and the gradual improvement of people's living standards, the requirements for the quality of living environment are also getting higher and higher. In the past, people only knew about water pollution, soil pollution and air pollution. However, in recent years, light pollution and noise pollution have also become the focus of attention. Recently, we often see news reports that residents complain that the exhaust fans of factories or other units are noisy and have a great impact on life. The problem of loud noise in the operation of some exhaust fans used in industrial production has been put on the table. How can the exhaust fan industry in China be alerted?
The development of exhaust fan in China has a long history. At present, the exhaust fan has been widely used in factories, tunnels, mines, boilers and buildings. As an important gas exhaust machinery, the exhaust fan mainly plays the role of ventilation, dust removal, induced draft, cooling, drying, inflation, etc. The main principle of the fan is to convert the rotating machinery into gas pressure energy and kinetic energy to transport the gas, so it will generate noise during operation. The noise generated by the exhaust fan will not only affect the lives of nearby residents, but also cause inevitable damage to the health of production workers who work in a noise polluted environment for a long time. Noise pollution not only causes serious damage to hearing, but also affects other systems of the human body by acting on the central nervous system of the brain through auditory organs, causing neurological decline, digestive system disorders and other diseases. As a pollutant, noise has been included in the detection of China's environmental protection system. The Law of the People's Republic of China on the Prevention and Control of Environmental Noise Pollution has been implemented since 1997. However, until today, many enterprises still disdain the noise pollution caused by fans, and fan manufacturers are still producing fan products with serious noise.
With the continuous development of science and technology, it has become possible to conduct bass noise reduction on the exhaust fan. For a long time, some enterprises have not paid attention to noise pollution, so that low-noise fans have not been popularized in the market, and the enterprises producing fans can only reduce the output of low-noise fans to adapt to the market. The low noise fan has become a major problem hindering the development of the fan industry due to its acclimatization to the local conditions of the fan market in China. However, we believe that as people's requirements for living environment become higher and higher, and the country's requirements for labor security become higher and higher, the future development of low-noise exhaust fans will be unlimited.
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