What are the classifications and characteristics of Negative Pressure Fan in negative pressure ventilation and cooling projects?

1. Classification

(1) Classification by material:
Galvanized square negative pressure fan: This fan is usually made of galvanized sheet metal and has good corrosion resistance and durability.
Glass fiber reinforced plastic negative pressure fan: This fan is made of glass fiber reinforced plastic, which is light in weight and high in strength. It is suitable for occasions where lightweight equipment is required.

(2) Classification by installation method:
Type A: Installed on a bracket, the wind blows downward.
Type B: Installed on a bracket, the wind blows upward.
Type C: Installed on the ground, the wind head is upward.

(3) Classification by function:
Positive pressure water curtain environmental air conditioner: used for positive pressure air supply and positive pressure blowing.
Negative pressure water curtain environmental air conditioner: used for negative pressure ventilation and cooling.

2. Features

(1) Working principle:
Negative pressure fan reduces the indoor air pressure to form a negative pressure area, thereby sucking in fresh air through doors, windows or openings, while expelling the stuffy air in the room. This principle makes it perform well in ventilation and cooling.

(2) Performance advantages:
Large air volume: Negative pressure fans can generate huge air volumes and are suitable for ventilation and cooling needs of large areas.
Low energy consumption: Due to their efficient air flow design, negative pressure fans have relatively low energy consumption.
Low noise: Modern negative pressure fans focus on noise reduction in design and produce less noise during operation.
Long life: Due to the use of high-quality materials and optimized design, negative pressure fans have a long service life.

(3) Technical features:
Efficient ventilation: Negative pressure fans can quickly exhaust stagnant air in the room and introduce fresh air, with a ventilation efficiency of up to 90%-97%.
Compact structure: The fan is small in size, easy to install, and suitable for a variety of environments.
Customization: The size, color and function of the fan can be customized according to customer needs.