Introduction
The Elevator Exhaust Fan mounted directly onto the structural car transom or ceiling frame of a lift cabin. Its primary function is to continuously exchange stagnant cabin air with the cooled or ambient air inside the elevator shaft.
Product Parameters
|
Item |
Specification |
|
Airflow range |
350 – 850 m³/h |
|
Air change rate |
Up to 45 air changes/hour (1600kg cabin) |
|
Motor type |
BLDC / PSC external rotor motor |
|
Bearing life |
L10: 50,000 hours @ 40°C |
|
Static pressure resistance |
Up to 120 Pa |
|
Impeller balance grade |
ISO G2.5 dual-plane balancing |
|
Bearing system |
Sealed NMB ball bearings (5-year maintenance-free) |
Product Specifications
|
Item |
Specification |
|
Voltage compatibility |
230V AC (50Hz) / 115V AC (60Hz) / 24V DC backup |
|
Speed control input |
0–10V / PWM signal compatible |
|
Overheat protection |
Auto-reset thermal cut-off at 130°C |
|
Emergency power mode |
24V battery backup automatic switching |
|
Wiring system |
Fire-retardant conduit + AMP / Molex quick connectors |
|
Power consumption |
≤ 32W at full load |
Applications
Low-Profile Modernization: Ultra-slim housing depths starting at 45mm fit into restricted drop-ceiling clearances of older traction lifts without altering existing structural frames.
High-Rise Express Lift: Reinforced chassis designs prevent blade deflection and housing distortion under air pressure fluctuations up to 4m/s caused by the piston effect in express shafts.
Hospital & Medical Elevator: Optional integrated photocatalytic and negative ion sterilization module. Based on the SGS/Intertek test report, the system achieves a ≥ 99.1% elimination rate of Staphylococcus aureus and Escherichia coli within a 2-hour continuous recirculation cycle, meeting Grade-II clinical environment air safety criteria.
Residential Retrofits: Standard four-point flange mounts slip directly into existing 240mm x 240mm or 300mm x 300mm cutout openings, reducing field installation time to 15 minutes per unit.
Panoramic Cabin Integration: Flush-mounted intake grilles with brushed stainless steel finishes eliminate exposed fasteners, reducing cleaning maintenance and preventing passenger tampering in scenic glass elevators.
Manufacturing Capabilities
Monthly Output Capacity: Operating three automated assembly tracks delivers a monthly production capacity of 45,000 finished units to secure high-volume project procurement schedules.
Precision Metal Fabrication: Production utilizes automated AMADA CNC turret punches and 3000W fiber laser cutters, maintaining dimensional tolerances within ±0.05 mm, ensuring exact chassis alignment during field installation.
In-House Tooling Shop: Specialized progressive die development and chassis customization up to 600 mm × 600 mm are completed in-house, compressing custom bracket lead times to 14 days and eliminating client hard-tooling amortization fees.
Automated Motor Winding: Stator coils are wound using high-speed Swiss CNC winding machinery to maintain consistent coil resistance, reducing motor failure rates and extending continuous-duty lifespan.
Scalable Production MOQ: Standard catalog inventory models are maintained in stock with an MOQ of 100 units, while custom OEM projects require 500 units to initiate specialized production lines.
Compliance, Certifications & Quality Control
Elevator Code Conformity: Structural dimensions and protective grilles fully comply with European EN 81-20/50 and American ASME A17.1 elevator safety codes.
Fire Safety Standards: All plastic impellers and internal wire sleeves utilize UL 94 V-0 rated self-extinguishing materials that stop burning within 10 seconds to contain electrical fire risks.
UL / cUL Listing: Electrical components, insulation classes, and terminal blocks carry UL 507 safety recognition for electric fans, eliminating regulatory delays during North American project sign-offs.
CE, RoHS & EMC Certifications: All electronic assemblies carry CE markings, meet RoHS Directive 2011/65/EU, and pass EN 55014-1/2 testing, ensuring electromagnetic compatibility with VVVF drives and lift control systems.
Rigorous QA Testing Sequence: Control PCBs undergo Automated Optical Inspection (AOI), followed by 100% end-of-line functional testing (current draw, speed, 1,500V AC dielectric strength) and 72-hour environmental thermal cycling from -20°C to +80°C.
Traceable Component Batching: Every unit features a laser-etched alphanumeric serial number linked to component supplier lots and QC records to accelerate root-cause analysis and streamline field maintenance.
FAQ
Q: What is the expected operational lifespan under continuous elevator use?
A: Under standard passenger elevator duty cycles, the unit is designed for 8–10 years at 18–20 hours daily operation. In high-rise express shafts, lifespan may reduce to approximately 7–8 years due to higher air pressure fluctuation loads.
Q: What does the 50,000-hour bearing life mean in real terms?
A: At 20 hours daily operation, 50,000 hours translates to approximately 6–7 years before bearing replacement is recommended. In residential buildings running 8–10 hours daily, the same bearings typically last 13–17 years maintenance-free.
Q: How often does the fan require maintenance in real installations?
A: Preventive maintenance is required every 12–18 months, mainly limited to dust cleaning and connector inspection. The sealed motor system requires no lubrication during its service life.
Q: What is the measured noise level during full-speed operation?
A: At full airflow output, sound pressure level is typically 42–48 dB(A) at 1 meter depending on mounting structure and ceiling cavity resonance. Low-speed mode reduces noise to below 38 dB(A).
Q: What is the MTBF for the complete unit?
A: System-level MTBF is calculated at approximately 65,000–72,000 operating hours, based on motor thermal cycling tests and bearing degradation modeling under EN 81 duty conditions.
Q: Which elevator systems is this fan physically compatible with?
A: Commonly adapted to Otis, Kone, and Schindler retrofit cabins with minor bracket adjustments.
Q: What happens in case of power failure or emergency stop?
A: The system automatically switches to 24V backup supply within 0.3–0.5 seconds, maintaining minimum airflow circulation until elevator rescue or restart.
Q: How is product reliability verified before shipment?
A: Each unit undergoes 72-hour continuous load testing at variable humidity (30–90%) and temperature cycling (-20°C to +80°C). Only units with stable current deviation under ±5% are released for shipment.
Q: What is the expected vibration level during operation?
A: Measured vibration is controlled within ≤1.8 mm/s RMS, below the ISO 10816-3 Class II threshold for small rotating electrical machines.
Q: How does the system reduce long-term maintenance cost?
A: Sealed bearings eliminate routine lubrication, and the modular motor assembly allows field replacement within 10–15 minutes.
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