Regulation system for regulating air flow in conduit for ventilation, has calibration element mounted in conduit, to regulate air flow through conduit, where calibration element is adjustable in rotation around longitudinal axis of conduit

摘要

The system (S) has a cylindrical conduit (2) centered about a longitudinal axis (X-X'), and a regulating element (4) mounted in the conduit relative to a fixed part (10) of the conduit, where the regulating element is movable to change an air passage section in the conduit depending on the pressure of the air passing through the conduit. A calibration element (6) is mounted in the conduit relative to the fixed part of the conduit, to regulate the air flow through the conduit, where the calibration element is adjustable in rotation around the longitudinal axis of the conduit.