Mixed Flow Fan

In scenarios with moderate requirements for both airflow and pressure, combined with sensitivity to operating noise and energy consumption - such as commercial building HVAC ventilation, underground parking smoke extraction, and hospital operating room air supply - the mixed flow fan, with its unique mixed-flow aerodynamic principle, is the ideal choice balancing performance and economy. Our factory's mixed flow fan ingeniously combines the dual advantages of axial fans' high airflow and centrifugal fans' high pressure. Within the impeller, gas receives both axial thrust and superimposed centrifugal pressurization, with the outlet direction at an oblique angle to the axis. Thus, within a compact footprint similar to an axial fan, it delivers pressure capability more than double that of a pure axial fan. This characteristic makes the mixed flow fan particularly suitable for HVAC systems requiring moderate duct resistance overcome combined with high airflow delivery.

Our factory has invested substantial R&D effort in the design of the mixed flow fan. The impeller adopts swept-back three-dimensional flow blades, with blade count and setting angle optimized via CFD simulation, maintaining high efficiency and a stable pressure curve across a wide operating range, effectively avoiding hump phenomena and unstable operating zones. Impeller material options include quality carbon steel, aluminum alloy, or stainless steel, surface-treated after precision stamping or casting, with each unit dynamically balanced after assembly. The casing adopts a cylindrical structure with internal guide vanes that smoothly direct the obliquely exiting airflow toward the outlet, reducing vortex losses. Two drive methods are available: direct drive (compact, high transmission efficiency) and belt drive (flexible speed adjustment via pulley ratio to suit different operating conditions). Every mixed flow fan undergoes full performance testing - airflow, pressure, power, efficiency, and noise - on a standard chamber test bench before shipping, with verifiable test data ensuring nameplate parameters match actual performance. With 25 years of fan manufacturing experience and an in-house R&D team, our factory can quickly deliver selection proposals based on customers' specific installation space and operating parameters, ensuring every mixed flow fan operates at its optimal point for the lowest long-term operating cost.

• Supply and return air for central HVAC systems in commercial complexes, office buildings, and hotels
• General ventilation in public buildings such as hospitals, schools, and government offices
• Daily ventilation and fire smoke extraction in underground parking lots and civil defense structures
• General building ventilation, spot cooling, and process exhaust in industrial plant workshops
• Precision HVAC matching heat dissipation in data centers and telecom base station rooms
• Large kitchen range hood systems and laboratory fume hood exhaust

We support full-process OEM and ODM customization. Impeller diameters from 200mm to 1,600mm can be customized as needed; inlet/outlet flanges are machined to customer duct dimensions; casing length, base type, and access door position are adjusted to site space. Motor brand can be specified or recommended based on budget. Surface treatment options include standard paint, epoxy zinc-rich paint, electrostatic powder coating, and hot-dip galvanizing, with colors customized to color cards. For corrosion resistance requirements, 304/316 stainless steel wetted parts are available; for explosion-proof requirements, explosion-proof motors and electrical components can be fitted. MOQ is one unit; mixed models and configurations allowed. Development lead time is 10–15 working days.

Each product carries a unique production number with full traceability from cutting to shipping. Steel profiles are sourced from Ansteel and Baosteel, with each batch accompanied by a material certificate and heat number verified upon receipt. Motors and bearings are sourced from renowned brands such as SKF and Wafangdian Bearing, with appearance and power-on checks upon receipt. Cutting uses CNC laser cutting; welding is performed by certified welders with critical welds penetrant-tested. Impellers undergo double-sided dynamic balancing to Grade G6.3 or above; after assembly, no-load trial runs verify rotation direction, current, vibration, and noise. Before packaging, every unit undergoes 100% inspection of five indicators, then receives a conformity certificate and nameplate, accompanied by a user manual, packing list, and inspection report. We welcome third-party factory inspection by SGS, BV, TUV, and other agencies.

The company holds multiple national utility model patents including a fan blade detection device, a protective cooling air conditioning device, and a cooling airflow device - technologies directly applied in product design and process improvement. Product performance testing is conducted to international standards AMCA 210 and ISO 5801, with test equipment regularly calibrated. Motors carry CCC mandatory certification; CE documentation is available for export. Electrical control cabinets are designed and manufactured to IEC 61439 standards. We maintain industry-university-research collaborations with multiple domestic universities and research institutes, continuously introducing advanced foreign design concepts and manufacturing technology to ensure our products remain at the industry's first tier in technical level and quality reliability.

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