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{"title":"41000m\u00b3\/H Direct Drive Fan Negative Air Exhaust Fan For Workshop","imgUrl":"https:\/\/img.chinax.com\/nimg\/ae\/92\/e6049365f2639a01ac1bdbb09ee9-200x200-1\/41000m_c2_b3_2fh_direct_drive_fan_negative_air_exhaust_fan_for_workshop.jpg","attrs":{"Brand Name":"KC","Model Number":"1220","Certification":"CE,ISO,SGS","Place of Origin":"China"}}
{"title":"Wall Mounted FRP Negative Pressure Fan High Performance Weatherproof","imgUrl":"https:\/\/img.chinax.com\/nimg\/ee\/47\/9d0cac52d5b856743fd77fb47e80-200x200-1\/wall_mounted_frp_negative_pressure_fan_high_performance_weatherproof.jpg","attrs":{"Brand Name":"KC","Certification":"CE,ISO,SGS","Place of Origin":"China","Minimum Order Quantity":"1Pcs"}}
{"title":"50Hz\/380V Ventilation Exhaust Fan 250W 8000m\u00b3\/H Corrosion Resistant","imgUrl":"https:\/\/img.chinax.com\/nimg\/99\/69\/afc2f87c66e1ca47d0a043e6c410-200x200-1\/50hz_2f380v_ventilation_exhaust_fan_250w_8000m_c2_b3_2fh_corrosion_resistant.jpg","attrs":{"Brand Name":"KC","Certification":"CE,ISO,SGS","Place of Origin":"China","Minimum Order Quantity":"1Pcs"}}
{"title":"Low Noise Negative Pressure Fan High Efficiency With Stable Operation","imgUrl":"https:\/\/img.chinax.com\/nimg\/87\/4b\/bc701cf6ad8ab05a60e99af2b4fe-200x200-1\/low_noise_negative_pressure_fan_high_efficiency_with_stable_operation.jpg","attrs":{"Brand Name":"KC","Model Number":"1220","Certification":"CE,ISO,SGS","Place of Origin":"China"}}
{"title":"380V 1.1kw Negative Air Fan Negative Pressure Window Fan CAD\/CAM","imgUrl":"https:\/\/img.chinax.com\/nimg\/4f\/af\/9440419d30e7bfbca0af2a8ab65d-200x200-1\/380v_1_1kw_negative_air_fan_negative_pressure_window_fan_cad_2fcam.jpg","attrs":{"Brand Name":"KC","Model Number":"1220","Certification":"CE,ISO,SGS","Place of Origin":"China"}}
{"title":"400rpm Negative Pressure Ventilation Fan Durable With Heavy Duty Blades","imgUrl":"https:\/\/img.chinax.com\/nimg\/de\/9f\/98141319426155f98210829f151a-200x200-1\/400rpm_negative_pressure_ventilation_fan_durable_with_heavy_duty_blades.jpg","attrs":{"Brand Name":"KC","Model Number":"1220","Certification":"CE,ISO,SGS","Place of Origin":"China"}}
{"title":"Fiberglass Negative Pressure Fan 1.8KW Corrosion Resistant ISO Certified","imgUrl":"https:\/\/img.chinax.com\/nimg\/60\/f9\/22649fdce2d3aa9b620419a89835-200x200-1\/fiberglass_negative_pressure_fan_1_8kw_corrosion_resistant_iso_certified.jpg","attrs":{"Brand Name":"KC","Certification":"CE,ISO,SGS","Place of Origin":"China","Minimum Order Quantity":"1Pcs"}}
41000m³/h 1380 x 1380 x 400mm Galvanized Negative Pressure Fan
Characteristics:
Negative pressure fans are a modern ventilation solution, primarily used in negative pressure ventilation and cooling systems. These systems address both ventilation and cooling simultaneously. Beyond negative pressure applications, these fans are also utilized in positive pressure evaporative air conditioning systems, positive pressure air supply, and positive pressure blowing applications. They are a type of axial flow fan and are characterized by their large size, expansive air ducts, large fan blade diameters, high exhaust volume, low energy consumption, low speed, and low noise levels.
Key Applications:
Exhaust Ventilation: Installed on the exterior of workshop windows, typically on the downwind side, to extract stale air and odors. Commonly used in factories and industrial settings.
Cooling with Evaporative Cooling Pads: Used in conjunction with evaporative cooling pads (wet curtains) to lower workshop temperatures. This system can reduce temperatures to around 30°C (86°F) while maintaining a certain level of humidity, even in hot summer conditions.
Noise Reduction Methods:
Vibration Isolation:
Focus on vibration isolation of the motor and casing. Use rubber vibration damping pads or spring isolators to isolate the rigid connection between the motor and casing and the supporting structure.
Ensure flexible connections are used where the fan connects to the wall or roof to reduce vibration transmission.
Fan Blade Optimization:
Replace with low-noise fan blades, which typically use optimized aerodynamic profiles to reduce air turbulence.
Casing Soundproofing:
Attach sound-absorbing materials (such as sound-absorbing cotton or soundproofing felt) inside the casing to reduce casing resonance and noise radiation.
Duct Design:
Optimize duct design to reduce air resistance and turbulence, thereby reducing wind noise.
Add sound-absorbing materials to the inner walls of the duct.
Installation Location:
Install in a location as far away as possible from areas that require quiet.
2. Fiberglass Bell-Mouth Negative Pressure Fans:
Characteristics:
The bell-mouth design helps improve airflow and reduce air resistance.
Fiberglass material has good corrosion resistance and some sound absorption properties.
Commonly used in locations with higher noise requirements, such as livestock farms and greenhouses.
Noise Reduction Methods:
Technical parameter
Feature
Specification
Unit
Fan Diameter
1270
mm
Fan Blade Rotation Speed
400
r/m (RPM)
Airflow
41000
m³/h
Noise Level
60
dB
Rated Voltage
380
V
Power
1.1
kW
Dimensions
1380 x 1380 x 400
mm
Weight
85
kg
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Other
Year Established:
1999
Total Annual:
3000000-5000000
Employee Number:
180~220
Ecer Certification：
Verified Supplier
Cole June Ventilation Equipment (Dongguan) Co., Ltd specializes in environmental air conditioners, water-cooled air conditioners, cooling fans, and industrial large fans. We provide comprehensive services including engineering design, insta... Cole June Ventilation Equipment (Dongguan) Co., Ltd specializes in environmental air conditioners, water-cooled air conditioners, cooling fans, and industrial large fans. We provide comprehensive services including engineering design, insta...
