A compact axial or centrifugal fan mounted in the elevator cabin ceiling or rear wall void to provide forced-air ventilation, maintaining fresh air circulation and passenger comfort during operation.
Full Definition
EN 81-20 Section 8.17.2 requires that the cabin be ventilated by natural or mechanical means; when natural ventilation (via apertures in the cabin walls or ceiling) is insufficient — typically when the cabin is in a closed shaft — a forced-air fan is mandatory. Cabin fans are rated 30–150 m³/h airflow, powered from the 230 V AC or 24 V DC car lighting circuit, with noise levels ≤38 dB(A) at 1 m to avoid passenger discomfort. Axial fans (low static pressure) are used for ceiling-void installations where airflow resistance is minimal; centrifugal fans (higher static pressure) are used where air must be ducted through a false-ceiling plenum. Fan speed control (single-speed vs. variable-speed EC motor) reduces noise and energy consumption during low-occupancy periods. The fan must be accessible for blade cleaning and bearing replacement without dismantling the ceiling panels. Running hours should be logged via the elevator controller for planned maintenance scheduling.
