about 5111 yuan.

The fan is a driven fluid machine that relies on the input mechanical energy to raise the gas pressure and discharge the gas. Fan is a customary abbreviation for gas compression and gas conveying machinery in China. Usually, the fan includes ventilator, blower and wind generator.

Fans are widely used for ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and for ventilation and air introduction in boilers and industrial furnaces; Cooling and ventilation in air conditioning equipment and household appliances; Drying and selection of grain, wind source in wind tunnel and inflation and propulsion of hovercraft, etc.

the fan is related to the transmission and distribution energy consumption of the system, and it is a key part of building energy saving. According to many years' testing of fans in National Air Conditioning Equipment Quality Supervision and Inspection Center, many fans have problems under rated working conditions, so it is necessary to produce and manufacture fans in strict accordance with product standards.