Engineered ventilation units, heavy-duty axial fans, and modular thermal protection hardware manufactured directly at our Dezhou, Shandong manufacturing plant.
Class H insulated motors tested for 280°C/2h continuous extraction during sudden fire emergencies with dynamically balanced impellers.
Product Details
Aerodynamically profiled die-cast airfoil blades designed for maximum volumetric airflow and fast emergency toxic gas removal in tunnels.
Product Details
Hybrid pressure-volume rotor balancing low acoustic emission with high static duct penetration for commercial towers and transit stations.
Product Details
Certified fusible thermal links operating at 70°C or 280°C to automatically isolate zones and seal high-pressure duct compartmentalization.
Product Details
Double-skin insulated acoustic enclosure housing forward/backward curved impellers for whisper-quiet HVAC plant room operation.
Product Details
Closed-circuit copper/stainless coil matrix preventing fluid fouling, built for power plants, induction smelting, and data facilities.
Product Details
Heavy-gauge FRP/galvanized frame counterflow thermodynamic rejection system engineered for industrial chillers and petrochemical plants.
Product Details
Argon-shielded SUS304 / SUS316 modular welded reservoirs ensuring leak-proof emergency water storage for automatic fire sprinkler systems.
Product DetailsA deep engineering exploration of fluid dynamics, thermal survivability, and fail-safe design in mission-critical fire safety fans.
In modern structural fire protection, the smoke extraction subsystem functions as the ultimate life-support barrier. When thermal runaway or flame propagation occurs inside enclosed architectures—such as underground transit systems, commercial high-rise atriums, road tunnels, or hyperscale lithium-ion battery manufacturing facilities—over 80% of fire-related casualties are induced not by flame contact, but by inhalation of toxic combustion gases (CO, HCN, NOx) and rapid oxygen depletion. As certified custom fire smoke exhaust fan manufacturers, Shandong Fengdun Environmental Technology Co., Ltd. architects and fabricates industrial-grade dual-use ventilation solutions that withstand lethal thermodynamic conditions while guaranteeing structural aerodynamic integrity.
Standard commercial HVAC blowers suffer catastrophic failure within minutes of exposure to elevated temperatures due to motor winding insulation degradation, thermal expansion-induced bearing seizure, and blade flutter deformation. Fengdun's emergency smoke clearance fans undergo rigorous high-temperature qualification protocols, incorporating F400 (400°C for 120 min) and F300 (300°C for 120 min) thermal compliance profiles conforming to EN 12101-3, ISO 21927-3, and Chinese National Standard GB/T requirements. Through internal aerodynamic profiling and thermal isolation shielding, our custom axial, mixed-flow, and cabinet units maintain positive volumetric smoke evacuation rates under extreme static backpressures.
Computational Fluid Dynamics optimized aerofoil blades engineered from cast aluminum-silicon alloy or heavy Q235B/304 steel minimize turbulence and maximize static efficiency above 83%.
Patented motor cooling airstreams isolated from hot toxic smoke pathways. High-temp Class H insulation with vacuum pressure impregnation (VPI) rated for up to 300°C continuous operation.
Every rotor assembly is precision-balanced to ISO 1940 Grade G2.5 standards, drastically lowering vibration amplitudes below 1.8 mm/s to eliminate bearing fatigue under emergency full-load rpm.
Dahlander pole-changing or frequency-inverter matched dual-purpose winding architecture provides energy-saving everyday fresh air ventilation and instant high-speed emergency smoke clearance.
Bespoke life-safety ventilation architectures tailored to harsh physical conditions, explosive environments, and complex acoustic zones.
Longitudinal tunnel jet fans and bi-directional reversible axial stations engineered to control piston effects, purge toxic exhaust fumes in normal operation, and guide smoke plumes toward egress shafts during fire events.
Stairwell pressurization fans and vertical mechanical smoke extract shafts designed with dynamic variable frequency drive (VFD) controls to prevent door opening resistance while preventing smoke migration into escape stairwells.
High-static centrifugal cabinet and explosion-proof ATEX/IECEx mixed-flow extract fans constructed to swiftly vent flammable off-gases, electrolyte aerosols, and toxic fluoride clouds generated during battery thermal runaway.
| Fan Architecture | Airflow Capacity (m³/h) | Static Pressure (Pa) | Thermal Survivability | Acoustic Level (dB(A)) | Ideal Application Sector |
|---|---|---|---|---|---|
| HTFC Fire Smoke Axial Fan | 3,500 – 145,000 | 180 – 1,200 | 280°C / 120 min | 68 – 85 | Subways, highway tunnels, large logistics hubs |
| SWF Mixed Flow Smoke Fan | 2,200 – 95,000 | 350 – 1,650 | 300°C / 120 min | 62 – 78 | Commercial high-rise duct shafts, basements |
| HTXI Soundproof Cabinet Fan | 1,800 – 68,000 | 220 – 980 | 280°C / 90 min | 54 – 69 | Hospitals, luxury hotels, urban multi-use atriums |
| WEX D-D Roof Smoke Extractor | 4,000 – 120,000 | 120 – 650 | 400°C / 120 min | 70 – 86 | Chemical production plants, power generation stations |
Unmatched supply chain integration, digitalized fabrication lines, and direct cost-to-performance efficiency for global engineering contractors.
Situated in Dezhou, Shandong Province—the epicenter of China's HVAC and central air-treatment cluster—our 12,000 m² facility draws upon raw steel supply, spinning hubs, coil winding, and surface passivation within a 15-kilometer radius.
Full-spectrum CNC fiber laser cutting systems ensure blade contour deviations remain within ±0.05 mm. Automated seamless spin-flanging machines cold-form fan casings without weld stresses, preventing air leakage under high pressure.
By bypassing third-party trading intermediaries and multi-tier distribution channels, overseas EPC contractors capture substantial capital savings with direct access to factory application engineers for drawing sign-offs.
With over 15 years of technical manufacturing excellence, 280+ seasoned production specialists, and full ISO 9001:2015 quality management infrastructure, we guarantee traceable mill test certificates (MTC), static/dynamic balance records, and third-party pre-shipment inspections (SGS, TÜV, BV).
Pioneering smart ventilation paradigms through brushless EC drive motors, AIoT predictive condition monitoring, and bio-inspired low-noise aero-acoustics.
Integrating IE5 Ultra-Premium Permanent Magnet Synchronous Motors (PMSM) and electronically commutated (EC) drives to slash everyday energy draw by up to 34% while retaining maximum emergency overload capability.
Integrated micro-MEMS vibration sensors, thermal probes, and Modbus/BACnet transmitters that pipe real-time bearing condition data to cloud building management systems (BMS) for zero-failure emergency readiness.
Adopting owl-wing inspired serrated trailing-edge blade geometries that break up large vortex sheds into micro-eddies, achieving a 4 to 6 dB(A) acoustic sound power reduction without sacrificing volumetric CFM output.
Aligning project documentation, international electrical grids, and export packaging with the exacting standards of cross-border developers.
Our smoke extraction equipment is engineered and fully tested to meet CE, EN 12101-3 (Classes F200, F300, F400), AMCA 210/301, ISO 5801, and UL 705 standards, guaranteeing approval by local Civil Defense Authorities worldwide.
Custom wound multi-tap motors fully compatible with regional power grids: 380V/50Hz (China, Europe, Southeast Asia), 400V/50Hz (Middle East), 460V/480V 60Hz (North America), and 415V/50Hz (Australia/UK).
Fumigated solid wooden casing, anti-corrosion VCI vacuum barrier wrap, desiccant saturation, and secured shaft clamping prevent moisture and dynamic shock damage throughout ocean transits.
In-depth responses from our senior aerodynamic and electrical engineering team regarding design selection, compliance, and customization.
Complete project-scale ventilation, cooling, and water storage hardware directly fabricated by Shandong Fengdun Environmental Technology Co., Ltd.
Continuous emergency smoke ventilation engineered for subways, transit tunnels, shopping malls, and underground garages.
Product Details
Cast aluminum alloy adjustable-pitch blades ensuring high volume delivery and rapid compartment purge under extreme thermal conditions.
Product Details
Aerodynamic hub with diagonal flow velocity vectors bridging high volume axial delivery and high pressure centrifugal capability.
Product Details
Galvanized structural steel frame with precision interlocked blades to halt flame and toxic smoke spread through ventilation ducting.
Product Details
Perforated internal acoustic liner with sound absorption core ideal for noise-sensitive cleanrooms, libraries, and offices.
Product Details
High-temperature sintered enamel glass coating over heavy steel plates offering ultra-durable corrosion barrier for industrial water.
Product Details
Reinforced underground composite reservoir freeing up surface land while maintaining high-volume dedicated fire suppression reserves.
Product Details
Food-grade SUS304/SUS316 modular water tanks assembled with precision argon arc welding for clean water and fire sprinkler integration.
Product Details