--- title: "Permanent Magnet Large Industrial Fan" url: https://tiercooling.com/posts/permanent-magnet-large-industrial-fan/ date: 2025-12-16 modified: 2026-09-28 lang: en author: "info@tiercooling.com" description: "Current location: Home Permanent Magnet Large Industrial HVLS Fans High air volume, low rotation speed, and quiet operation improve your working environment. Covering an area of up to 1,450 ㎡..." categories: - "News" image: https://tiercooling.com/wp-content/uploads/2026/09/news-838.jpg word_count: 1492 --- # Permanent Magnet Large Industrial Fan - [ Current location: Home ](https://rundongfang.com/) - ![rdf-hvls-fans-case-014](https://rundongfang.com/wp-content/uploads/rdf-hvls-fans-case-014-768x448.jpg) ![rdf-hvls-fans-case-015](https://rundongfang.com/wp-content/uploads/rdf-hvls-fans-case-015-768x448.jpg) ![rdf-hvls-fans-case-016](https://rundongfang.com/wp-content/uploads/rdf-hvls-fans-case-016-768x448.jpg) # Permanent Magnet Large Industrial HVLS Fans High air volume, low rotation speed, and quiet operation improve your working environment. Covering an area of up to 1,450 ㎡ with less than 1 kWh of electricity per hour, it instantly boosts production efficiency. Safe and energy-saving, it delivers an exceptionally cool and comfortable experience — not just airflow, but cash flow. Variable frequency start: Equipped with a top-tier domestic frequency inverter, it delivers less vibration at low speeds, shock-free variable frequency startup, smooth operation, and near-silent performance. - Sealed motor: The fully enclosed motor has fewer monitoring points and failure points, greatly reducing maintenance workload and costs, with a long service life. - Aviation-grade materials: The blades are made of the same material as aviation-grade airfoils, offering greater toughness, safety, and reliability. - Natural wind simulation: Streamlined blades, combined with aerodynamic principles, powerfully circulate indoor air to generate simulated natural wind. - High efficiency and energy saving: Permanent magnet direct-drive motor + top-tier inverter, with an air volume of 15197 m³/min and power consumption of only 1.3 kW per hour. 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High-temperature environments affect work efficiency. When people work in an environment of 28–32°C, their work efficiency begins to decline and they become more prone to fatigue. When the temperature exceeds 32°C, a person’s attention and alertness also begin to be affected. - High-temperature working environments not only affect productivity but also harm physical health, easily causing dehydration, heatstroke, and even suffocation among workers. - Mental work is even more sensitive to temperature. When the temperature reaches 29°C, the efficiency of mental work begins to decline—the higher the temperature, the shorter the duration of sustained work. - High temperatures also affect the incidence of accidents. The accident rate is low at around 20–24°C, but when the temperature rises above 30°C or falls below 10°C, the accident rate increases substantially. ![](https://rundongfang.com/wp-content/uploads/products-info-001.jpg) Human comfort depends not only on temperature, but equally on factors such as air velocity, oxygen content, and humidity control. Together, these factors determine how comfortable people feel in an environment. Air conditioners with the right performance characteristics address all of these key factors, ensuring a high-quality, comfortable indoor air environment. ## The Relationship Between Physical Work Efficiency and Temperature and Air Velocity - When the temperature is too high, body temperature rises and the body sweats profusely, leaving workers feeling fatigued all over; in severe cases, this can lead to serious dehydration, heatstroke, and fainting. - At the same time, the central nervous system is suppressed, attention is distracted, the accuracy and coordination of movements decline, limbs become weak, and the likelihood of accidents increases. - Effective temperature refers to the temperature a person perceives in an environment with air movement. When the wet-bulb temperature remains constant, the higher the air velocity, the lower the effective temperature. Therefore, air velocity affects both human comfort and work efficiency. - Even in a relatively hot working environment, maintaining a flow of fresh air at a certain velocity can keep workers feeling comfortable and mitigate the various adverse effects caused by high temperatures. | Model | RDF-S3600 | RDF-S4200 | RDF-S4200 | RDF-B6200 | RDF-B6200 | RDF-B6700 | RDF-B6700 | RDF-H7200 | RDF-H7200 | | -------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | | Diameter | 3600mm | 4200mm | 5200mm | 6200mm | 6200mm | 6700mm | 6700mm | 7200mm | 7200mm | | | (12ft) | (14ft) | (17ft) | (20ft) | (20ft) | (22ft) | (22ft) | (24ft) | (24ft) | | Input Voltage/Frequency | Single-phase 220V/50HZ | Single-phase 220V/50HZ | Single-phase 220V/50HZ | Single-phase 220V/50HZ | Single-phase 380V/50HZ | Single-phase 220V/50HZ | Single-phase 380V/50HZ | Single-phase 220V/50HZ | Single-phase 380V/50HZ | | Rated Current | 2.6A | 2.6A | 2.6A | 4.5A | 3.1A | 4.5A | 3.1A | 4.5A | 3.1A | | Power (kW) | 0.66kw | 0.66kw | 0.66kw | 1.3kw | 1.3kw | 1.3kw | 1.3kw | 1.3kw | 1.3kw | | Maximum Speed | 90RPM | 80RPM | 70RPM | 60RPM | 60RPM | 55RPM | 55RPM | 58RPM | 58RPM | | Max Airflow | 4552m³/min | 5306m³/min | 7065m³/min | 10747m³/min | 10747m³/min | 12560m³/min | 12560m³/min | 15197m³/min | 15197m³/min | | Noise Level | ﹤38d/B | ﹤38d/B | ﹤39d/B | ﹤39d/B | ﹤39d/B | ﹤39d/B | ﹤39d/B | ﹤39d/B | ﹤39d/B | | Weight | 72KG | 75KG | 78KG | 100KG | 100KG | 105KG | 105KG | 115KG | 115KG | | Coverage Area | ∅20-24m | ∅22-26m | ∅25-30m | ∅32-37m | ∅32-37m | ∅35-40m | ∅35-40m | ∅38-44m | ∅38-44m | ![](https://rundongfang.com/wp-content/uploads/hvls-fans-4.jpg) ### Three-Dimensional Natural Breeze Rundongfang industrial large fans work by agitating large volumes of indoor air to create air movement, producing a natural breeze effect equivalent to Force 1–3 wind. In tall and spacious buildings, they create a soft, comfortable natural-breeze-like effect, significantly improving stuffy working environments, increasing productivity, reducing employee turnover, and achieving energy savings. ![](https://rundongfang.com/wp-content/uploads/hvls-fans-3.jpg) ### Fan and Equipment Combination Perfectly integrated with air conditioners, evaporative air coolers, and negative pressure exhaust fans — an innovative continuation of ventilation and cooling systems. ![](https://rundongfang.com/wp-content/uploads/hvls-fans-1.jpg) ### Ventilation and Cooling The RunDongFang industrial large fan works by stirring large volumes of indoor air to create airflow, producing a level 1-3 natural breeze effect. In high and large spaces, it creates a soft, comfortable natural-wind-like effect, significantly improving stuffy working environments, increasing production efficiency, reducing employee turnover, and achieving energy savings. ![](https://rundongfang.com/wp-content/uploads/hvls-fans-3.jpg) ### Wide Coverage Area By rotating large-diameter fan blades to push massive amounts of air down to the ground, an airflow layer of a certain height is formed at ground level, moving horizontally in all directions and promoting air circulation throughout the entire space; it features low rotational speed, low energy consumption, high air volume, and a wide coverage area. [ Open Spaces ](javascript:void(0)) [ Enclosed Spaces ](javascript:void(0)) [ Multiple Fan Combination ](javascript:void(0)) [ Bypassing Obstacles ](javascript:void(0)) - ![Open Space](https://rundongfang.com/wp-content/uploads/hvls-fans-7.jpg) ![Enclosed Space](https://rundongfang.com/wp-content/uploads/hvls-fans-8.jpg) ![Multiple Fan Combination](https://rundongfang.com/wp-content/uploads/hvls-fans-5.jpg) ![Bypassing Obstacles](https://rundongfang.com/wp-content/uploads/hvls-fans-6.jpg) ![](https://rundongfang.com/wp-content/uploads/rdf-company-about-us-032.jpg) On-site installation service is provided; - Free on-site survey with 1-on-1 customized solutions — truly zero cost, worry-free and reassuring; - The net height of the building should be at least 4 meters, and the spacing between load-bearing structural columns should be more than 20% greater than the diameter of the fan to be installed; - The roof structure should allow a load capacity of 150 kg or more; the total equipment weight of the fan is approximately 125 kg (including installation accessories and dynamic load), torque 300 N/m, and noise below 39 dB; - The effective coverage area of a single fan is a diameter of 30–40 m per unit, with adjacent fans spaced 30–40 meters apart; - The optimal installation height for the fan is when the blades are about 6–8 meters above the ground, and in no case less than 4 meters; - Ensure that the fan installation location is free from chandeliers or other obstructions; - The optimal distance between the control box installation location and the fan installation location is less than 30 meters; - Locations with prolonged heat sources or oil fumes are not suitable for installation. ![](https://rundongfang.com/wp-content/uploads/Installation-003.jpg)I-beam suspension installation ![](https://rundongfang.com/wp-content/uploads/Installation-002.jpg)Steel frame hoisting ![](https://rundongfang.com/wp-content/uploads/Installation-004.jpg)Crossbeam hoisting ![](https://rundongfang.com/wp-content/uploads/Installation-001.jpg)Round pipe hoisting - **Commercial public spaces:** large shopping malls, supermarkets, specialty wholesale markets, convention and exhibition centers, showrooms, car 4S dealerships; - **Manufacturing:** industrial plants, production workshops, logistics warehouses, e-commerce distribution centers, express parcel sorting centers; - **Leisure & Tourism:** Large amusement parks, public parks, tourist attractions, specialty towns, dining, entertainment; - **Sports:** Cultural centers, gyms, indoor training facilities. ![](https://rundongfang.com/wp-content/uploads/rdf-company-about-us-029.jpg) ![](https://rundongfang.com/wp-content/uploads/rdf-hvls-fans-case-016-1.jpg) - Improves air circulation in the space; - Comfort comes from air movement; - Perceived cooling of 3-5 degrees; - Coverage of 40-50 meters; - Creates a level 1-3 gentle, three-dimensional natural breeze — quiet and healthier. ![](https://rundongfang.com/wp-content/uploads/hvls-fans-13.jpg) ![](https://rundongfang.com/wp-content/uploads/hvls-fans-12.jpg)