High-temperature Ducted Axial Fan

In the exhaust systems of industrial furnaces, the hot air conveyance pipelines of drying equipment, and the high-temperature gas ducts of chemical processes, fans are often required to be directly connected in series in the duct to provide conveying power for high-temperature gas. In such scenarios, the fan must not only withstand high temperatures but also have a structure that facilitates duct connection, with inlet and outlet flanges matching duct dimensions. Our factory's High-temperature ducted axial fan is specifically designed for series connection in high-temperature gas ducts - with cylindrical structure, flanged connections at both ends, and high-temperature resistant motor and impeller, it can be directly installed in the duct to provide stable conveying power for high-temperature gas.

The High-temperature ducted axial fan adopts a straight-through cylindrical structure, with flanges at both inlet and outlet for direct bolted connection to ducts, achieving seamless integration with the duct system. The impeller is cast from heat-resistant aluminum alloy or stamped from stainless steel, with airfoil blade profiles optimized to deliver stable airflow and pressure at high temperatures. The motor is a dedicated high-temperature motor with Class F or H insulation, located inside the cylinder but equipped with independent cooling air path or cooling coil to ensure safe operation at high temperatures. For higher temperature requirements (above 200°C), external long-shaft drive type is recommended, with the motor located outside the duct and driving the impeller via a high-temperature resistant long shaft, fundamentally avoiding motor contact with high-temperature gas. The cylinder is manufactured from thickened galvanized steel or stainless steel, with internal surfaces smooth to reduce flow resistance. Every High-temperature ducted axial fan from our factory undergoes high-temperature simulation testing, flange dimensional inspection, and vibration detection before shipping, ensuring reliable operation and tight duct connection at actual high-temperature conditions. In the high-temperature exhaust system of a large industrial furnace, a High-temperature ducted axial fan is installed in series in the 300°C flue gas duct, directly flange-connected to the duct, providing stable conveying power to send high-temperature flue gas to the waste heat recovery boiler. Its cylindrical structure perfectly matches the duct cross-section, with no abrupt changes in flow path, minimizing additional resistance; its high-temperature resistant motor and impeller ensure stable operation year-round - this is the application value of High-temperature ducted axial fans in high-temperature duct series connection.

• High-temperature flue gas conveyance ducts in industrial furnaces and kilns
• Hot air conveyance pipelines in drying equipment and drying lines
• High-temperature process gas ducts in chemical and petrochemical plants
• High-temperature exhaust ducts in glass and ceramic production lines
• Hot air circulation ducts in heat treatment furnaces
• High-temperature gas ducts in waste heat recovery systems

High-temperature ducted axial fans can be customized based on customer duct parameters. Cylinder diameter matches duct cross-section dimensions; flange standards (GB, ANSI, DIN, JIS) can be machined to customer requirements. Motor type selectable as internal high-temperature direct-drive or external long-shaft drive based on medium temperature. Impeller material selectable as heat-resistant aluminum alloy or stainless steel. Cylinder material selectable as galvanized steel or stainless steel. Welded connection type available for special duct requirements. Variable-frequency speed control available. MOQ is one unit; customization lead time is 10–15 working days.

The quality focus of high-temperature ducted axial fans is on high-temperature performance and flange connection accuracy. High-temperature motors are inspected for insulation grade and cooling system performance before warehousing. Impellers undergo dynamic balancing with accuracy no lower than Grade G6.3. Flange dimensions and bolt hole positions are inspected with measuring tools to ensure matching with customer ducts. After assembly, no-load running verifies current, vibration, and noise. High-temperature simulation testing verifies motor temperature and impeller performance at specified temperatures. Every product undergoes 100% inspection, accompanied by flange dimensional inspection records and high-temperature test records.

One-year warranty; manufacturing defects within the warranty period are repaired or replaced free of charge. Dedicated team responds within 24 hours and provides solutions within 48 hours. High-temperature ducted axial fan customers enjoy regular follow-up visits to inspect motor temperature and flange sealing status, identifying potential issues proactively. Beyond the warranty period, lifetime cost-price repair is offered with supply of high-temperature motors, heat-resistant impellers, and seals. On-site installation guidance and operator training are available.

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