Methods to improve the efficiency of negative pressure fans

The main function of the negative pressure fan is ventilation, which uses the refrigeration principle of air convection and negative pressure ventilation to remove the sultry gas. When using it, how to improve its operating efficiency? Here is my compilation:

The operation of the motor and the impeller are closely related. The impeller of the negative pressure fan can achieve ventilation, and the motor can bring a force to the impeller. The anti-corrosion impeller of the fan is basically treated with anti-corrosion, so some corrosive media will not corrode when passing through.

The electrical energy of the gas is converted into gas pressure energy. When the impeller of the negative pressure fan rotates, the gas enters the axial impeller from the inlet, pushes the natural aerodynamic force to increase the impeller blades, and then flows into the guide impeller. The guide vanes are off-axis and the gas enters the expander.

The impeller is the fan blade we usually see in negative pressure fans, but many people one-sidedly believe that the efficiency of the fan is improved because it is faster. The improvement of the working efficiency of the fan is directly related to the speed of the fan during normal operation. But an impeller could be a more energy-efficient measure, increasing efficiency while still using the same amount of electrical energy. The impeller can improve the working efficiency of the anti-corrosion fan. There are two advantages: the diameter of the impeller and the inclination of the impeller.

The negative pressure fan belongs to the axial flow fan, and the ventilation speed and wind speed can be designed according to the needs, so that any high heat, harmful gas and dust and smoke can be quickly discharged from the workshop. Moreover, the flow of air can take away the body's heat and make the body feel refreshed.