Products Description
The low RPM permanent magnet fan turns at just 55–120 RPM across the DCHVLS range - deliberately slow, because that is where a large airfoil rotor becomes quiet and moves a broad, gentle air column instead of a harsh blast. The permanent-magnet synchronous direct-drive motor has no gearbox and no mechanical transmission linkage, and it uses high-precision, heat-resistant, heavy-duty silent bearings, so the slow rotation stays ultra-quiet even over long hours. The aviation aluminum-magnesium airfoil blades push omni-directional air movement that breaks up hot/cold stratification, dries and dehumidifies, and combines natural ventilation with cooling; smooth sine-wave start and stop with no jerk plus speed-tracking restart keep the run gentle.
A slow, quiet fan is often chosen for spaces where noise and draft are sensitive, so the buyer is really buying a consistent acoustic and airflow behavior room after room. We deliver that through OEM / ODM and batch-production consistency: the same silent bearings, sine-wave controller and PMSM spec are repeated on every unit, and each fan is 100% tested before shipment. Structural customization of the clamped mount and drawing-based manufacturing adapt the low-RPM rotor to your beam spacing and site voltage, so the quiet performance lands where you need it.
Specifications
|
Parameter |
Specification |
|
Max speed |
55–120 RPM (slow rotation) |
|
Motor |
Permanent-magnet synchronous, gearless direct drive |
|
Blade diameter |
2000–7300 mm |
|
Blade count |
5–8 |
|
Motor power |
0.4–1.8 kW |
|
Air volume |
2,560–15,000 m³/min |
|
Coverage |
50–920 m² |
|
Power input |
3-phase 380 V or single-phase 220 V, 50/60 Hz |
Applications
Gyms, gymnasiums and waiting halls
slow rotation and silent bearings give a gentle, wide cooling column without the loud rush of a high-speed fan.
Offices adjacent to production
with no gearbox noise and no transmission linkage, the fan runs quietly enough near people working close by.
Sleep-sensitive livestock farms
the low-RPM, low-noise airflow moves humid air without the stress caused by fast, loud ventilation equipment.
Customization
- OEM / ODM and private label; manufactured to your drawings or prototypes.
- Blade diameter 2000–7300 mm, 5–8 blades.
- 3-phase 380 V or single-phase 220 V, 50/60 Hz.
- Clamped mounting to roof structural beams, ≥ 4.5 m above floor.
Packaging & Transportation
Every unit is fully tested before shipment and packed in fumigation-free plywood wooden cases; EXW, FOB, DDP and CIF are available.
FAQ
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