Centrifugal fan is a mechanical device that relies on input mechanical energy to increase gas pressure and discharge gas. It is a passive fluid machinery.
andsuction fan It is a machine that utilizes the cooling principle of air convection and negative pressure ventilation. It is a machine that naturally sucks in fresh air from the opposite side of the installation site - the door or window, and quickly forces the indoor hot and humid gases out of the room. The problem of poor ventilation can be improved, and the cooling and ventilation effect can reach 90% -97%.
In terms of principles and product features:;
Centrifugal fan is based on the principle of converting kinetic energy into potential energy, using a high-speed rotating impeller to accelerate gas, then decelerate and change the flow direction, converting kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, gas enters the impeller from the axial direction, changes to the radial direction as it flows through the impeller, and then enters the diffuser. In a diffuser, the gas changes its flow direction causing deceleration, which converts kinetic energy into pressure energy. The increase in pressure mainly occurs in the impeller, followed by the expansion process. In multi-stage centrifugal fans, a reflux device is used to direct the airflow into the next impeller, generating higher pressure& nbsp;
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 service life, high efficiency, etc. The louvers automatically open and close to achieve dust prevention, waterproofing, and beautiful appearance; It can be used for both blowing and drawing air, making it a better 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.
