The airflow enters the impeller of the fan axially and flows approximately along the axis on a cylindrical surface. Such fans include axial fans, axial blowers and axial compressors.

Scope of application

Fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced air for boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances ; Drying and selective delivery of grains; Air source of wind tunnel and inflation and propulsion of hovercraft. The working principle of the fan is basically the same as that of the turbo compressor, except that the gas flow rate is low and the pressure changes little. Generally, there is no need to consider the change of the gas specific volume, that is, the gas is treated as an incompressible fluid.

Features

1. The outer shell of the machine is sealed tighly, with excellent air-suck function and low power consumption, i.e.only 0.75KWHper hour.

2. The driving belt is PK muli-V belt, standing wear and tear, without slipping or noise during operation.

3. Air downsream principle is applied in the design of the shutters, therefore no power or personnel are needed to open or close the shutters. This device wears an elegant appearace and prevents rain water from getting in.

4. The main body frame is made of FRP material, which reduces metal resonance, resisting acid and alkali corrosion, thus prolonging the service life to 10--20years of continuous duty.

5. Negative pressure fan is designed according to the cooling principhe of cross-ventiation and negatice pressure ventilation. Fresh air naturally enters through the door or window opposite the installation spot and quickly drives the stuffy air out of the house; therefore, any poor ventiation prblem can be solved. The cooling and ventilation effect amounts to90%-97%.

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