সেন্ট্রিফিউগাল ফ্যান এবং নেগেটিভ প্রেসার ফ্যানের মধ্যে পার্থক্য

industrial centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. The negative pressure fan uses the cooling principle of air convection and negative pressure ventilation. It is a kind of natural inhalation of fresh air from the opposite side of the installation site—the door or window, and the sultry air in the room is quickly forced out of the room. Any problems with poor ventilation A machine that can be improved, the cooling and ventilation effect can reach 90 percent -97 percent . In terms of principle and product features: centrifugal fans are based on the principle of converting kinetic energy into potential energy, using a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction to convert kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, changes to the radial direction when the gas flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes the direction of flow causing deceleration, which converts kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller, followed by the diffusion process. In a multi-stage centrifugal fan, a recirculator is used to move the airflow to the next impeller, creating a higher pressure. Centrifugal fan : The negative pressure fan adopts CAD/CAM design, which has the characteristics of low investment cost, large air volume, low noise, low energy consumption, stable operation, long life and high efficiency, and the shutters automatically open and close to achieve dustproof and waterproof. , Beautiful and elegant; it can be used for both blowing and exhausting, which is the best choice for cooling and ventilation in modern workshops. Environmentally friendly and energy-saving negative pressure fans will become the mainstream of the ventilation and cooling equipment market.

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