A vacuum fan utilizes the cooling principle of air convection and negative pressure exchange to naturally draw in fresh air from opposite directions—such as doors or windows at the installation location, rapidly expelling stuffy indoor air outdoors. It can improve any ventilation issues, achieving a cooling and air exchange efficiency of up to 90%-97%.
The complete unit is designed using CAD/CAM, featuring low investment cost, high air volume, low noise, low energy consumption, stable operation, and long lifespan. The louvers automatically open and close for dust and water resistance, as well as for aesthetic appeal. It can both blow and extract air, making it an ideal choice for modern workshop cooling and ventilation. Energy-saving and environmentally friendly exhaust fans will become the mainstream in the ventilation and cooling equipment market.
App Introduction
1. For ventilation and air exchange: Installed outside the workshop windows, typically at the downwind side to exhaust, removing odorous gases; commonly used in chemical factories, etc.
2. Used with a wet curtain: For cooling workshops during the sweltering summer, no matter how hot your workshop is, the wet curtain-negative pressure fan system can lower the temperature in your workshop to around 30°C, while maintaining a certain level of humidity.
3. Application Range: Negative Pressure Fan
A. Suitable for workshops with high temperatures or odors: such as heat treatment plants, foundries, plastic factories, aluminum profile factories, shoe factories, leather goods factories, electroplating factories, dyeing and printing factories, various chemical factories.
B. Suitable for labor-intensive businesses: such as garment factories, various assembly workshops, Internet cafes.
C. Ventilation and temperature reduction for horticultural greenhouses and livestock farms.
D. Particularly suitable for locations requiring cooling and a certain level of humidity, such as cotton, wool, hemp, weaving, chemical fiber, warp knitting, twisting, knitting, silk, sock factories, and various other textile mills.
E. Suitable for warehousing and logistics field

4. For exhaust fan use: Standard exhaust fans (commonly known as threshing fans) are generally less efficient, with one fan barely able to cover a few people. Negative pressure blowers, however, are different, whether placed on the ground or hung in the air. Typically, for a 1,000 square meter workshop, four blowers are needed to ensure a strong wind throughout the entire space.