Beijing ventilator is a kind of driven fluid machinery, which depends on the input mechanical energy to increase the gas pressure and send the gas side by side. Fan is China's customary abbreviation for gas compression and transmission machinery. Generally speaking, fan includes fan, blower and wind turbine. Fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induced draft of boilers and industrial furnaces, cooling and ventilation of air conditioning equipment and household electrical appliances.
The air flow of Beijing fresh air system from the system pipe into the fan changes direction through the air inlet box, and then flows to the impeller after converging and accelerating through the collector. The motor power works on the air flow through the impeller blade, and the working angle of the blade and the distance between the blades can be adjusted steplessly, so as to change the air volume and the air pressure to meet the change of working conditions. The air flow after passing through the impeller is spiral motion, and turns to axial direction through the rear guide blade It flows into the diffuser, and part of the kinetic energy of the gas in the diffuser is converted into static energy, and then flows to the system to meet the operation requirements, so as to complete the working process of fan output.
