Negative pressure fan is the use of air convection, negative pressure ventilation cooling principle, from the installation site to the door or window natural inhalation of fresh air, the indoor hot air quickly forced out of the outdoor, any poor ventilation can improve the machine, cooling ventilation effect can reach 90%-97%. The whole machine adopts CAD/CAM design, with low investment cost, large air volume, low noise, low energy consumption, stable operation, long life, high efficiency, automatic shutters to dustproof, waterproof, beautiful and generous; Can blow air, is the best choice of modern factory cooling ventilation, can also be ventilation. The negative pressure fan of environmental protection and energy saving will become the mainstream of ventilation and cooling equipment market.

Negative pressure fan is suitable for high temperature or odor workshop: such as heat treatment plant, casting factory, plastic factory, aluminum factory, shoe factory, leather factory, electroplating factory, various chemical plants; Suitable for labor-intensive enterprises: such as garment factories, all kinds of assembly workshops, Internet cafes; Horticultural greenhouse greenhouse ventilation cooling, livestock ranch cooling; It is especially suitable for places that need cooling and certain humidity. Such as cotton mill, wool mill, hemp mill, textile factory, chemical fiber factory, warp knitting factory, elastic factory, knitting factory, silk weaving factory, socks factory and other kinds of textile factory; Suitable for warehousing and logistics field.
Its powerful advantages are:
1, less investment, low energy consumption. The same refrigeration rate, one-time investment is about 1/6 of the air-conditioning, the operating cost is about 1/10 of the air-conditioning;
2, the cooling effect is significant, can reduce the temperature to about 28 degrees consistent with the human body temperature if the water well with water as the source of the water tank is better, can compare with the effect of air conditioning
3. The air is fresh and moist. Air cleanliness can reach 99%;