Shanxi low-noise local ventilation fan
Introduction to the Eco-friendly FBD Low-Noise Axial Flow Local Ventilation Fan
Figure 1: Outline Diagram of the Eco-friendly Low-Noise Local Ventilation Fan
The eco-friendly FBD low-noise axial flow local ventilation fan is an ultra-low noise, environmentally friendly ventilation fan developed by our company. This series of fans adopts multiple noise reduction measures. Based on the aerodynamic principles of the fan and the principles of noise generation and propagation, it incorporates a streamlined intake silencer and an inlet/outlet composite silencer. The fan unit has been structurally optimized, and the addition of high-quality sound-absorbing materials provides better adsorption of mid-to-low frequency noise and efficient isolation of high-frequency noise, resulting in the elimination and attenuation of overall fan noise. The noise of the fan at various frequencies is reduced to below 85 to 80 decibels, protecting the physical and mental health of on-site personnel, improving the working environment in mines, and achieving environmentally friendly air supply.
Patent No.: ZL 2020 2 1223212.3 "A low-noise counter-rotating axial flow ventilation fan".
Noise Reduction Principle:
The noise reduction advantage of our designed fan adopts a comprehensive noise reduction method; it comprehensively addresses the fan's performance, structure, and materials used; first, it ensures scientific noise reduction while maintaining reliable operating air volume; using our company's unique noise reduction technology, various sound-absorbing materials and sound-absorbing processes are integrated into the equipment. The noise reduction measures are based on the principles of noise generation and propagation, changing the intake direction, optimizing the structural design, and achieving better adsorption of mid-to-low frequency noise and efficient isolation of high-frequency noise, resulting in the elimination and attenuation of overall fan noise; Patent No.: ZL 2020 2 1223212.3.
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