Exhaust Ventilation Combined With Wet Curtains Galvanized Negative
Pressure Fan
The material classification can be divided into iron box (ordinary
fan), fiberglass reinforced plastic fan, plastic, aluminum,
stainless steel fan, etc. Fans can be classified according to the
direction of airflow, including main structure flow, oblique flow,
mixed flow, centrifugal and axial negative pressure fans with cross
flow patterns. According to the flow direction of the airflow
entering the impeller, it can be divided into axial flow fans,
centrifugal fans, and diagonal and mixed flow fans. Fans can be
divided into pressure based on the local usage of fans (hereinafter
referred to as fan pressure) and external and internal
explosion-proof motors in the port channel. The main structure of
the explosion-proof motor explosion-proof negative pressure fan is
extracted from the sealed room of the local fan (hereinafter
referred to as the extraction fan). Fans can be divided into axial
flow fans, mixed flow fans, roof fans, air conditioning fans, etc.
Fans can be divided into low-pressure and medium pressure fans and
high-pressure fans according to pressure.
Technical features of the 138012201060900 model negative pressure
fan: It adopts CAD/CAM optimized design and manufacturing, and has
the characteristics of high full pressure, large air volume, low
noise, low energy consumption, stable operation, and long service
life; The automatic opening of blinds can achieve dust-proof,
waterproof, and beautiful appearance; It can blow or draw air,
making it the best choice for cooling and ventilation in
greenhouses and factories. For some special installation occasions,
double mesh or double mesh+louver type fans can be customized.
Application
Exhaust Ventilation: Negative pressure fans are installed outside
workshop windows, typically positioned to draw air out, effectively
removing unpleasant odors. They are commonly used in factories.
Combined with Wet Curtains: These fans can be used in conjunction
with wet curtains for cooling in workshops during hot summer
months. Regardless of how hot the workshop gets, the wet
curtain-negative pressure fan system can lower the temperature to
around 30°C while maintaining a certain level of humidity.
High-Temperature or Odorous Workshops: Suitable for heat treatment
plants, foundries, plastic factories, aluminum profile factories,
shoe manufacturing plants, leather factories, electroplating
plants, and various chemical factories.
Labor-Intensive Enterprises: Ideal for clothing factories, assembly
workshops, and internet cafes.
Horticultural Greenhouses: Used for ventilation and cooling in
greenhouses and livestock farms.
Textile Factories: Especially suitable for environments requiring
cooling and a certain level of humidity, such as cotton mills,
woolen mills, mills, weaving factories, chemical fiber factories,
warp knitting factories, false twisting factories, knitting
factories, silk factories, and sock factories.
Warehouse and Logistics: Applicable in storage and logistics
sectors.
Installation Guidelines
Optimal Location: It’s best to install negative pressure fans in
the middle of the building to minimize air duct resistance and
shorten the length of installation pipes. If possible, position the
fan in the prevailing wind direction of the cooling environment.
Sealing and Waterproofing: Ensure proper sealing and waterproofing
between indoor and outdoor ducts during installation to prevent
rainwater leakage.
Structural Support: The installation location must have a sturdy
structure capable of supporting the weight of the negative pressure
fan and the ducts, as well as maintenance personnel.
Installation Environment: Negative pressure fans can be mounted on
outdoor floors, walls, or roofs. However, the installation site
must ensure fresh, unobstructed air. They should not be placed near
sources of foul odors or exhaust gases, such as restrooms or
kitchens. If there are insufficient doors or windows, a dedicated
exhaust fan must be installed, with an airflow capacity of at least
80%–90% of the total airflow of the negative pressure fan.
Technical parameter
| Model Number | Inlet Diameter (mm) | Blade Speed (r/min) | Airflow (m³/h) | Noise (dB) | Power (kW) | Rated Voltage (V) | Weight (kg) | External Dimensions (mm) |
| F-1 | 1270 | 450 | 44500 | 68 | 1.1 | 380 | 80 | 1380 × 1380 × 400 |
| F-2 | 1110 | 400 | 37000 | 75 | 0.75 | 380 | 60 | 1220 × 1220 × 400 |
| F-3 | 950 | 350 | 25000 | 55 | 0.55 | 380 | 50 | 1060 × 1060 × 400 |
| F-4 | 790 | 320 | 19500 | 50 | 0.45 | 380 | 40 | 900 × 900 × 400 |
Wall Mounted FRP Negative Pressure Fan High Performance Weatherproof
